Jacobs Engineering (J) 10-K 21 Nov 22 2022 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Sep. 30, 2022	Nov. 11, 2022	Apr. 01, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2022
Current Fiscal Year End Date	--09-30
Document Transition Report	false
Entity File Number	1-7463
Entity Registrant Name	Jacobs Solutions Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4081636
Entity Address, Address Line One	1999 Bryan Street
Entity Address, Address Line Two	Suite 1200
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	214
Local Phone Number	583 – 8500
Title of 12(b) Security	Common Stock
Trading Symbol	J
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		126,332,274
Entity Public Float			$ 17.8
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the Registrant’s definitive proxy statement to be issued in connection with its 2023 annual meeting of shareholders are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated.
Entity Central Index Key	0000052988
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false

Audit Information

Audit Information	12 Months Ended
	Sep. 30, 2022
Auditor [Abstract]
Auditor Name	Ernst and Young LLP
Auditor Location	Dallas, Texas
Auditor Firm ID	42

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Current Assets:
Cash and cash equivalents	$ 1,140,479	$ 1,014,249
Receivables and contract assets	3,405,381	3,101,418
Prepaid expenses and other	176,134	176,228
Total current assets	4,721,994	4,291,895
Property, Equipment and Improvements, net	346,676	353,117
Other Noncurrent Assets:
Goodwill	7,184,658	7,197,000
Intangibles, net	1,394,052	1,565,758
Deferred income tax assets	31,480	103,193
Operating lease right-of-use assets	476,913	650,097
Miscellaneous	504,646	471,549
Total other noncurrent assets	9,591,749	9,987,597
Total assets	14,660,419	14,632,609
Current Liabilities:
Current maturities of long-term debt	50,415	53,456
Accounts payable	966,792	908,441
Accrued liabilities	1,441,762	1,533,559
Operating lease liability	150,171	172,414
Contract liabilities	641,705	542,054
Total current liabilities	3,250,845	3,209,924
Long-term debt	3,357,256	2,839,933
Liabilities relating to defined benefit pension and retirement plans	271,332	418,080
Deferred income tax liabilities	269,077	214,380
Long-term operating lease liability	607,447	758,358
Other deferred liabilities	167,548	559,375
Commitments and Contingencies
Redeemable Noncontrolling Interests	632,522	657,722
Capital stock:
Preferred stock, $1 par value, authorized - 1,000,000 shares; issued and outstanding - none	0	0
Common stock, $1 par value, authorized - 240,000,000 shares; issued and outstanding - 127,393,378 shares and 128,892,540 shares as of September 30, 2022 and October 1, 2021, respectively	127,393	128,893
Additional paid-in capital	2,682,009	2,590,012
Retained earnings	4,225,784	4,015,578
Accumulated other comprehensive loss	(975,130)	(794,442)
Total Jacobs stockholders’ equity	6,060,056	5,940,041
Noncontrolling interests	44,336	34,796
Total Group stockholders’ equity	6,104,392	5,974,837
Total liabilities and stockholders' equity	$ 14,660,419	$ 14,632,609

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2022	Oct. 01, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	1,000,000,000	1,000,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	240,000,000	240,000,000
Common stock, issued (in shares)	127,393,378	128,892,540
Common stock, outstanding (in shares)	127,393,378	128,892,540

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Income Statement [Abstract]
Revenues	$ 14,922,825	$ 14,092,632	$ 13,566,975
Direct cost of contracts	(11,595,785)	(11,048,860)	(10,980,307)
Gross profit	3,327,040	3,043,772	2,586,668
Selling, general and administrative expenses	(2,409,190)	(2,355,683)	(2,050,695)
Operating Profit	917,850	688,089	535,973
Other Income (Expense):
Interest income	4,489	3,503	4,729
Interest expense	(100,246)	(72,714)	(62,206)
Miscellaneous income (expense), net	54,254	76,724	(37,293)
Total other (expense) income, net	(41,503)	7,513	(94,770)
Earnings from Continuing Operations Before Taxes	876,347	695,602	441,203
Income Tax Expense for Continuing Operations	(160,903)	(274,781)	(55,320)
Net Earnings of the Group from Continuing Operations	715,444	420,821	385,883
Net (Loss) Earnings of the Group from Discontinued Operations	(32)	10,008	137,984
Net Earnings of the Group	715,412	430,829	523,867
Net Earnings Attributable to Noncontrolling Interests from Continuing Operations	(36,788)	(39,213)	(32,022)
Net (Earnings) Loss Attributable to Redeemable Noncontrolling Interests	(34,585)	85,414	0
Net Earnings Attributable to Jacobs from Continuing Operations	644,071	467,022	353,861
Net Earnings Attributable to Jacobs	$ 644,039	$ 477,030	$ 491,845
Net Earnings Per Share:
Basic Net Earnings from Continuing Operations Per Share (in dollars per share)	$ 5.01	$ 3.15	$ 2.69
Basic Net Earnings from Discontinued Operations Per Share (in dollars per share)	0	0.08	1.05
Basic Earnings Per Share (in dollars per share)	5.01	3.22	3.74
Diluted Net Earnings from Continuing Operations Per Share (in dollars per share)	4.98	3.12	2.67
Diluted Net Earnings from Discontinued Operations Per Share (in dollars per share)	0	0.08	1.04
Diluted Earnings Per Share (in dollars per share)	$ 4.98	$ 3.20	$ 3.71

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Statement of Comprehensive Income [Abstract]
Net Earnings of the Group	$ 715,412	$ 430,829	$ 523,867
Other Comprehensive (Loss) Income:
Foreign currency translation adjustment	(397,819)	15,585	64,052
Gain (loss) on cash flow hedges	154,541	29,332	(21,883)
Change in pension and retiree medical plan liabilities	92,527	142,135	(75,334)
Other comprehensive (loss) income before taxes	(150,751)	187,052	(33,165)
Income Tax (Expense) Benefit:
Foreign currency translation adjustment	19,019	(3,110)	(3,722)
Cash flow hedges	(43,595)	(7,357)	7,285
Change in pension and retiree medical plan liabilities	(5,361)	(37,970)	13,357
Income Tax (Expense) Benefit:	(29,937)	(48,437)	16,920
Net other comprehensive (loss) income	(180,688)	138,615	(16,245)
Net Comprehensive Income of the Group	534,724	569,444	507,622
Net Earnings Attributable to Noncontrolling Interests	(36,788)	(39,213)	(32,022)
Net (Earnings) Loss Attributable to Redeemable Noncontrolling Interests	34,585	(85,414)	0
Net Comprehensive Income Attributable to Jacobs	$ 463,351	$ 615,645	$ 475,600

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Total Jacobs Stockholders’ Equity	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Balance at the beginning of the period at Sep. 27, 2019	$ 5,768,658	$ 5,714,691	$ 132,879	$ 2,559,450	$ 3,939,174	$ (916,812)	$ 53,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	523,867	491,845			491,845		32,022
Foreign currency translation adjustments, net of deferred taxes	60,330	60,330				60,330	0
Pension and retiree medical plan liability, net of deferred taxes	(61,977)
(Loss) Gain on derivatives, net of deferred taxes	(14,598)	(14,598)				(14,598)
Dividends	(99,921)	(99,921)			(99,921)
Noncontrolling interests - distributions and other	(41,032)	5,002		5,002			(46,034)
Stock based compensation	48,150	48,150		47,048	1,102
Issuances of equity securities including shares withheld for taxes	9,441	9,441	998	17,890	(9,447)
Repurchases of equity securities	(337,251)	(337,251)	(4,129)	(30,944)	(302,178)
Balance at the end of the period at Oct. 02, 2020	5,855,667	5,815,712	129,748	2,598,446	4,020,575	(933,057)	39,955
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	516,243	477,030			477,030		39,213
Foreign currency translation adjustments, net of deferred taxes	12,475	12,475				12,475	0
Pension and retiree medical plan liability, net of deferred taxes	104,165	104,165				104,165
(Loss) Gain on derivatives, net of deferred taxes	21,975	21,975				21,975
Dividends	(109,616)	(109,616)			(109,616)
Noncontrolling interests - distributions and other	(44,372)	0		0			(44,372)
Stock based compensation	56,221	56,221		56,221	0
Redeemable Noncontrolling interests redemption value adjustment	(175,183)	(175,183)			(175,183)
Issuances of equity securities including shares withheld for taxes	12,210	12,210	871	20,345	(9,006)
Repurchases of equity securities	(274,948)	(274,948)	(1,726)	(85,000)	(188,222)
Balance at the end of the period at Oct. 01, 2021	5,974,837	5,940,041	128,893	2,590,012	4,015,578	(794,442)	34,796
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	680,827	644,039			644,039		36,788
Foreign currency translation adjustments, net of deferred taxes	(378,800)	(378,800)				(378,800)
Pension and retiree medical plan liability, net of deferred taxes	87,166	87,166				87,166
(Loss) Gain on derivatives, net of deferred taxes	110,946	110,946				110,946
Dividends	(118,291)	(118,291)			(118,291)
Noncontrolling interests - distributions and other	(27,248)						(27,248)
Stock based compensation	53,383	53,383		53,383	0
Redeemable Noncontrolling interests redemption value adjustment	(27,657)	(27,657)			(27,657)
Repurchase and issuance of redeemable noncontrolling interests	2,618	2,618			2,618
Issuances of equity securities including shares withheld for taxes	28,537	28,537	973	39,537	(11,973)
Repurchases of equity securities	(281,926)	(281,926)	(2,473)	(923)	(278,530)
Balance at the end of the period at Sep. 30, 2022	$ 6,104,392	$ 6,060,056	$ 127,393	$ 2,682,009	$ 4,225,784	$ (975,130)	$ 44,336

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Statement of Stockholders' Equity [Abstract]
Foreign currency translation adjustment	$ (19,019)	$ 3,110	$ 3,722
Change in pension and retiree medical plan liabilities	5,361	37,970	(13,357)
Gain (loss) on derivative deferred taxes	$ 43,595	$ 7,357	$ (7,285)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Cash Flows from Operating Activities:
Net Earnings of the Group	$ 715,412	$ 430,829	$ 523,867
Depreciation and amortization:
Property, equipment and improvements	102,454	101,024	91,070
Intangible assets	198,602	149,776	90,563
Gain on sale of ECR business	0	(15,608)	(110,236)
(Gain) loss on investment in equity securities	(13,862)	(71,325)	103,623
Stock based compensation	53,383	56,221	48,150
Equity in earnings of operating ventures, net of return on capital distributions	18,291	10,941	9,172
(Gain) loss on disposals of assets, net	(4,680)	1,003	766
Impairment of equity method investment and other long term assets	78,292	40,640	162,238
Loss on pension and retiree medical plan changes	123	2,783	4,598
Deferred income taxes	111,846	113,623	82,275
Changes in assets and liabilities, excluding the effects of businesses acquired:
Receivables and contract assets, net of contract liabilities	(267,947)	242,154	(107,784)
Prepaid expenses and other current assets	6	6,800	(27,280)
Miscellaneous other assets	113,850	116,097	110,678
Accounts payable	87,402	(165,502)	(92,838)
Income taxes payable	(70,258)	20,961	35,194
Accrued liabilities	(552,036)	(252,305)	(27,849)
Other deferred liabilities	(73,697)	(63,915)	(64,390)
Other, net	(22,472)	2,079	(24,968)
Net cash provided by operating activities	474,709	726,276	806,849
Cash Flows from Investing Activities:
Additions to property and equipment	(127,615)	(92,814)	(118,269)
Disposals of property and equipment and other assets	9,392	474	96
Capital contributions to equity investees, net of return of capital distributions	3,025	(5,016)	(12,278)
Acquisitions of businesses, net of cash acquired	(437,083)	(1,741,062)	(293,580)
Disposals of investment in equity securities	13,862	421,315	0
Proceeds (Payments) related to sales of businesses	0	36,360	(5,061)
Net cash used for investing activities	(538,419)	(1,380,743)	(429,092)
Cash Flows from Financing Activities:
Proceeds from long-term borrowings	3,145,500	4,445,080	2,986,661
Repayments of long-term borrowings	(2,420,166)	(3,216,965)	(2,521,467)
Proceeds from short-term borrowings	0	0	78
Repayments of short-term borrowings	(6,359)	(7,675)	(200,008)
Debt issuance costs	0	(2,747)	(1,807)
Proceeds from issuances of common stock	51,034	38,077	37,235
Common stock repurchases	(281,926)	(274,948)	(337,251)
Taxes paid on vested restricted stock	(28,587)	(25,867)	(27,794)
Cash dividends to shareholders	(115,948)	(107,188)	(97,900)
Net dividends associated with noncontrolling interests	(26,982)	(48,784)	(46,062)
Repurchase of redeemable noncontrolling interests	(46,074)	0	0
Proceeds from issuances of redeemable noncontrolling interests	49,742	0	0
Net cash provided by (used for) financing activities	320,234	798,983	(208,315)
Effect of Exchange Rate Changes	(128,892)	19,635	61,914
Net Increase in Cash and Cash Equivalents and Restricted Cash	127,632	164,151	231,356
Cash and Cash Equivalents, including Restricted Cash, at the Beginning of the Period	1,026,575	862,424	631,068
Cash and Cash Equivalents, including Restricted Cash, at the End of the Period	$ 1,154,207	$ 1,026,575	$ 862,424

Description of Business and Bas

Description of Business and Basis of Presentation	12 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Description of Business Jacobs Solutions Inc. ("Jacobs" or "the Company") is a leading global professional services company that designs and deploys technology-centric solutions to solve many of the world’s most complex challenges. In fiscal year 2022 we operated in three operating segments: Critical Mission Solutions, People & Places Solutions and our investment in PA Consulting Group Limited ("PA Consulting"). We provide a broad range of technical, professional and construction services including engineering, design and architectural services; construction and construction management services; operations and maintenance services; and process, scientific and systems consulting services. We provide our services through offices and subsidiaries located primarily in North America, Europe, the Middle East, India, Australia, New Zealand and Asia. We provide our services under cost-reimbursable and fixed-price contracts, with our fixed-price contracts comprised mainly of professional services arrangements and in some limited cases, construction. The percentage of revenues realized from each of these types of contracts for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020 was as follows: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Cost-reimbursable 74% 76% 76% Fixed-price 26% 24% 24% Basis of Presentation, Definition of Fiscal Year, and Other Matters The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP") and include the accounts of Jacobs Solutions Inc. and its subsidiaries and affiliates which it controls. On August 29, 2022, Jacobs Engineering Group Inc. (JEGI), the predecessor to Jacobs Solutions Inc., implemented a holding company structure, which resulted in Jacobs Solutions Inc. becoming the parent company of, and successor issuer to, JEGI. Prior to the implementation date, the Consolidated Financial Statements include the accounts of JEGI and its subsidiaries and affiliates which it controlled . All intercompany accounts and transactions have been eliminated in consolidation. The Company’s fiscal year ends on the Friday closest to September 30 (determined on the basis of the number of workdays) and, accordingly, an additional week of activity is added every five-to-six years. Fiscal 2020 included an extra week of activity. On February 4, 2022, the Company acquired StreetLight Data, Inc. ("StreetLight"). StreetLight is a pioneer of mobility analytics who uses its data and machine learning resources to shed light on mobility and enable users to solve complex transportation problems. The Company paid total base consideration of approximately $190.8 million in cash and issued $0.9 million in equity and $5.2 million in in-the-money stock options to the former owners of StreetLight. The Company also paid off StreetLight's debt of approximately $1.0 million simultaneously with the consummation of the acquisition. The Company has recorded its preliminary purchase price allocation associated with the acquisition, which is summarized in Note 15- Other Business Combinations. On November 19, 2021, Jacobs acquired BlackLynx, a provider of high-performance software, to complement Jacobs' portfolio of cyber, intelligence and digital solutions. The Company paid total base consideration of approximately $235.4 million in cash to the former owners of BlackLynx. In conjunction with the acquisition, the Company also paid off BlackLynx's debt of approximately $5.3 million simultaneously with the consummation of the acquisition. The Company has recorded its final purchase price allocation associated with the acquisition, which is summarized in Note 15- Other Business Combinations. On March 2, 2021, Jacobs completed the strategic investment of a 65% interest in PA Consulting, a UK-based leading innovation and transformation consulting firm. The total consideration paid by the Company was $1.7 billion, funded through cash on hand, proceeds from a new term loan and draws on the Company's existing Revolving Credit Facility. Further, in connection with the transaction, an additional $261 million in investment proceeds had not yet been distributed at the investment date due to continuing employment requirements of associated management owners. Consequently, this amount represented compensation expense incurred related to the investment that was expensed subsequent to the date of the transaction, and was reflected in selling, general and administrative expense and cash from operations for the fiscal year ended October 1, 2021. The remaining 35% interest was acquired by PA Consulting employees, whose redeemable noncontrolling interests had a fair value of $582.4 million on the closing date, including subsequent purchase accounting adjustments. PA Consulting is accounted for as a consolidated subsidiary and as a separate operating segment. The Company has recorded its final purchase price allocation associated with the acquisition. See Note 14- PA Consulting Business Combination for more discussion on the investment and Note 9- Borrowings for more discussion on the financing for the transaction. On November 24, 2020, a subsidiary of Jacobs completed the acquisition of Buffalo Group, a leader in advanced cyber and intelligence solutions which allows Jacobs to further expand its cyber and intelligence solutions offerings to government clients. The Company paid total consideration o f $190.1 million, which was comprised of approximately $182.4 million in cash to the former owners of Buffalo Group and contingent consideration of $7.7 million The contingent consideration was subsequently recognized in fiscal 2021 as an offset to selling, general and administrative expense when it was determined no amounts would be paid. In conjunction with the acquisition, the Company assumed the Buffalo Group's debt of approximately $7.7 million. The Company repaid all of the assumed Buffalo Group debt by the end of the first fiscal quarter of 2021. The Company has recorded its final purchase price allocation associated with the acquisition, which is summarized in Note 15- Other Business Combinations. On March 6, 2020, a subsidiary of Jacobs completed the acquisition of the nuclear consulting, remediation and program management business of John Wood Group, a U.K.-based energy services company, for an enterprise value of £246 million, or approximately $317.9 million, less cash acquired of $24.3 million. The Company has recorded its final purchase price allocation associated with the acquisition, which is summarized in Note 15- Other Business Combinations. On April 26, 2019, Jacobs completed the sale of its Energy, Chemicals and Resources ("ECR") business to Worley Limited, a company incorporated in Australia ("Worley"), for a purchase price of $3.4 billion consisting of (i) $2.8 billion in cash plus (ii) 58.2 million ordinary shares of Worley, subject to adjustments for changes in working capital and certain other items (the “ECR sale”). As a result of the ECR sale, substantially all ECR-related assets and liabilities were sold (the "Disposal Group"). We determined that the Disposal Group should be reported as discontinued operations in accordance with ASC 210-05, Discontinued Operations because their disposal represents a strategic shift that had a major effect on our operations and financial results. As such, the financial results of the ECR business are reflected in our Consolidated Statements of Earnings as discontinued operations for all periods presented. As of September 30, 2022, all of the ECR business to be sold under the terms of the sale has been conveyed to Worley and as such, no amounts remain held for sale. For further discussion see Note 16- Sale of Energy, Chemicals and Resources ("ECR") Business .

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Revenue Accounting for Contracts Engineering, Procurement & Construction Contracts, Service Contracts and Software Contracts The Company recognizes engineering, procurement, and construction contract revenue over time, as performance obligations are satisfied, due to the continuous transfer of control to the customer in accordance with ASC Topic 606, Revenue from Contracts with Customers . Contracts which include engineering, procurement and construction services are generally accounted for as a single deliverable (a single performance obligation) and are no longer segmented between types of services. In some instances, the Company’s services associated with a construction activity are limited to specific tasks such as customer support, consulting or supervisory services. In these instances, the services are typically identified as separate performance obligations. The Company recognizes revenue using the percentage-of-completion method, based primarily on contract costs incurred to date compared to total estimated contract costs. The percentage-of-completion method (an input method) is the most representative depiction of the Company’s performance because it directly measures the value of the services transferred to the customer. Subcontractor materials, labor and equipment and, in certain cases, customer-furnished materials and labor and equipment are included in revenue and cost of revenue when management believes that the company is acting as a principal rather than as an agent (e.g., the company integrates the materials, labor and equipment into the deliverables promised to the customer or is otherwise primarily responsible for fulfillment and acceptability of the materials, labor and/or equipment). The Company recognizes revenue, but not profit, on certain uninstalled materials that are not specifically produced, fabricated, or constructed for a project. Revenue on these uninstalled materials is recognized when control is transferred. Changes to total estimated contract cost or losses, if any, are recognized in the period in which they are determined as assessed at the contract level. Pre-contract costs are expensed as incurred unless they are expected to be recovered from the client. Project mobilization costs are generally charged to project costs as incurred when they are an integrated part of the performance obligation being transferred to the client. Under the typical payment terms of our engineering, procurement and construction contracts, amounts are billed as work progresses in accordance with agreed-upon contractual terms at periodic intervals (e.g., biweekly or monthly) and customer payments are typically due within 30 to 60 days of billing, depending on the contract. For service contracts, the Company recognizes revenue over time using the cost-to-cost percentage-of-completion method. Service contracts that include multiple performance obligations are segmented between types of services. For contracts with multiple performance obligations, the Company allocates the transaction price to each performance obligation using an estimate of the stand-alone selling price of each distinct service in the contract. In some instances where the Company is standing ready to provide services, the Company recognizes revenue ratably over the service period. Under the typical payment terms of our service contracts, amounts are billed as work progresses in accordance with agreed-upon contractual terms, and customer payments are typically due within 30 to 60 days of billing, depending on the contract. Revenue for certain contracts related to the sale of software licenses is recognized at a point in time, typically at the time of delivery, in accordance with ASC 606. The software license sale will be treated as a performance obligation separate and distinct from any related service and maintenance. Direct costs of contracts include all costs incurred in connection with and directly for the benefit of client contracts, including depreciation and amortization relating to assets used in providing the services required by the related projects. The level of direct costs of contracts may fluctuate between reporting periods due to a variety of factors, including the amount of pass through costs we incur during a period. On those projects where we are acting as principal for subcontract labor or third-party materials and equipment, we reflect the amounts of such items in both revenues and costs (and we refer to such costs as “pass through costs”). Back charges to suppliers or subcontractors are recognized as a reduction of cost when it is determined that recovery of such cost is probable and the amounts can be reliably estimated. Disputed back charges are recognized when the same requirements described above have been satisfied. Variable Consideration The nature of the Company’s contracts gives rise to several types of variable consideration, including claims and unpriced change orders; awards and incentive fees; and liquidated damages and penalties. The Company recognizes revenue for variable consideration when it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. The Company estimates the amount of revenue to be recognized on variable consideration using the expected value (i.e., the sum of a probability-weighted amount) or the most likely amount method, whichever is expected to better predict the amount. Factors considered in determining whether revenue associated with claims (including change orders in dispute and unapproved change orders in regard to both scope and price) should be recognized include the following: (a) the contract or other evidence provides a legal basis for the claim, (b) additional costs were caused by circumstances that were unforeseen at the contract date and not the result of deficiencies in the company’s performance, (c) claim-related costs are identifiable and considered reasonable in view of the work performed, and (d) evidence supporting the claim is objective and verifiable. If the requirements for recognizing revenue for claims or unapproved change orders are met, revenue is recorded only when the costs associated with the claims or unapproved change orders have been incurred and only up to the amount of cost incurred which generally represents the amount of consideration that is not probable of reversal. The Company generally provides limited warranties for work performed under its engineering and construction contracts. The warranty periods typically extend for a limited duration following substantial completion of the Company’s work on the project. Historically, warranty claims have not resulted in material costs incurred for which the Company was not compensated for by the customer. See Note 3- Revenue Accounting for Contracts for further discussion. Joint Ventures and VIEs As is common to the industry, we execute certain contracts jointly with third parties through various forms of joint ventures. Although the joint ventures own and hold the contracts with the clients, the services required by the contracts are typically performed by us and our joint venture partners, or by other subcontractors under subcontracting agreements with the joint ventures. Many of these joint ventures are formed for a specific project. The assets of our joint ventures generally consist almost entirely of cash and receivables (representing amounts due from clients), and the liabilities of our joint ventures generally consist almost entirely of amounts due to the joint venture partners (for services provided by the partners to the joint ventures under their individual subcontracts) and other subcontractors. In general, at any given time, the equity of our joint ventures represents the undistributed profits earned on contracts the joint ventures hold with clients. Very few of our joint ventures have employees or third-party debt or credit facilities. The debt held by the joint ventures is non-recourse to the general credit of Jacobs. The assets of a joint venture are restricted for use to the obligations of the particular joint venture and are not available for general operations of the Company. Our risk of loss on these arrangements is usually shared with our partners. The liability of each partner is usually joint and several, which means that each partner may become liable for the entire risk of loss on the project. Furthermore, on some of our projects, the Company has granted guarantees which may encumber both our contracting subsidiary company and the Company for the entire risk of loss on the project. The Company is unable to estimate the maximum potential amount of future payments that we could be required to make under outstanding performance guarantees related to joint venture projects due to a number of factors, including but not limited to, the nature and extent of any contractual defaults by our joint venture partners, resource availability, potential performance delays caused by the defaults, the location of the projects, and the terms of the related contracts. See Note 19- Contractual Guarantees, Litigation, Investigations and Insurance for further discussion. Most of the joint ventures are deemed to be variable interest entities (“VIE”) because they lack sufficient equity to finance the activities of the joint venture. The Company uses a qualitative approach to determine if the Company is the primary beneficiary of the VIE, which considers factors that indicate a party has the power to direct the activities that most significantly impact the joint venture’s economic performance. These factors include the composition of the governing board, how board decisions are approved, the powers granted to the operational manager(s) and partner that holds that position(s), and to a certain extent, the partner’s economic interest in the joint venture. The Company analyzes each joint venture initially to determine if it should be consolidated or unconsolidated. • Consolidated if the Company is the primary beneficiary of a VIE, or holds the majority of voting interests of a non-VIE (and no significant participative rights are available to the other partners). • Unconsolidated if the Company is not the primary beneficiary of a VIE, or does not hold the majority of voting interest of a non-VIE. Our unconsolidated joint ventures (including equity method investments) are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment might not be recoverable, and impairment losses are recognized for such investments if there is a decline in fair value below carrying value that is considered to be other-than-temporary. See Note 8- Joint Ventures, VIEs and Other Investments for further discussion. Fair Value Measurements Certain amounts included in the accompanying consolidated financial statements are presented at “fair value.” Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants as of the date fair value is determined (the “measurement date”). When determining fair value, we consider the principal or most advantageous market in which we would transact, and we consider only those assumptions we believe a typical market participant would consider when pricing an asset or liability. In measuring fair value, we use the following inputs in the order of priority indicated: Level 1 - Quoted prices in active markets for identical assets or liabilities. Level 2 - Observable inputs other than quoted prices in active markets included in Level 1, such as (i) quoted prices for similar assets or liabilities; (ii) quoted prices in markets that have insufficient volume or infrequent transactions (e.g., less active markets); and (iii) model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data for substantially the full term of the asset or liability. Level 3 - Unobservable inputs to the valuation methodology that are significant to the fair value measurement. The net carrying amounts of cash and cash equivalents, trade receivables and payables and short-term debt approximate fair value due to the short-term nature of these instruments. See Note 9- Borrowings for a discussion of the fair value of long-term debt. Certain other assets and liabilities, such as forward contracts and interest rate swap agreements we purchased as cash-flow hedges discussed in Note 18- Commitments and Contingencies and Derivative Financial Instruments are required to be carried in our Consolidated Financial Statements at Fair Value. The fair value of the Company’s reporting units (used for purposes of determining whether there is an impairment of the carrying value of goodwill) is determined using an income and market approach. Both approaches require us to make certain estimates and judgments. Under the income approach, fair value is determined by using the discounted cash flows of our reporting units. Under the market approach, the fair values of our reporting units are determined by reference to guideline companies that are reasonably comparable to our reporting units; the fair values are estimated based on the valuation multiples of earnings before taxes, interest, depreciation and amortization associated with the guideline companies. In assessing whether the carrying value of goodwill has been impaired, we utilize the results of both valuation techniques and consider the range of fair values indicated. With respect to equity-based compensation (i.e., share-based payments), we estimate the fair value of stock options granted to employees and directors using the Black-Scholes option-pricing model. Like all option-pricing models, the Black-Scholes model requires the use of subjective assumptions including (i) the expected volatility of the market price of the underlying stock, and (ii) the expected term of the award, among others. Accordingly, changes in assumptions and any subsequent adjustments to those assumptions can cause different fair values to be assigned to our future stock option awards. For restricted stock awards (including restricted stock units) containing market conditions, compensation expense is based on the fair value of such awards using a Monte Carlo simulation. For restricted stock awards (including restricted stock units) containing service and performance conditions, compensation expense is based on the closing stock price on the date of grant. The fair values of the assets owned by the various pension plans that the Company sponsors are determined based on the type of asset, consistent with U.S. GAAP. Equity securities are valued by using market observable data such as quoted prices. Publicly traded corporate equity securities are valued at the last reported sale price on the last business day of the year. Securities not traded on the last business day are valued at the last reported bid price. Fixed income investment funds categorized as Level 2 are valued by the trustee using pricing models that use verifiable observable market data (e.g., interest rates and yield curves observable at commonly quoted intervals), bids provided by brokers or dealers, or quoted prices of securities with similar characteristics. Real estate consists primarily of common or collective trusts, with underlying investments in real estate. These investments are valued using the best information available, including quoted market price, market prices for similar assets when available, internal cash flow estimates discounted at an appropriate interest rate, or independent appraisals, as appropriate. Management values insurance contracts and hedge funds using actuarial assumptions and certain values reported by fund managers. Fair value measurements relating to our business combinations are made primarily using Level 3 inputs including discounted cash flow and to the extent applicable, Monte Carlo simulation techniques. Fair value for the identified intangible assets is generally estimated using inputs primarily for the income approach using the multiple period excess earnings method and the relief from royalties method. The significant assumptions used in estimating fair value include (i) revenue projections of the business, including profitability, (ii) attrition rates and (iii) the estimated discount rate that reflects the level of risk associated with receiving future cash flows. Other personal property assets, such as furniture, fixtures and equipment, are valued using the cost approach, which is based on replacement or reproduction costs of the asset less depreciation. The fair value of the contingent consideration is estimated using a Monte Carlo simulation and the significant assumptions used include projections of revenues and probabilities of meeting those projections. Key inputs to the valuation of the noncontrolling interests include projected cash flows and the expected volatility associated with those cash flows. The fair values for the asset groups relating to the impaired long-lived assets (see Note 10, Leases ) were estimated primarily using discounted cash flow models (income approach) with Level 3 inputs. The significant assumptions used in estimating fair value include the expected downtime prior to the commencement of future subleases, projected sublease income over the remaining lease periods and discount rates that reflects the level of risk associated with receiving future cash flows. The methodologies described above and elsewhere in these Notes to Consolidated Financial Statements may produce a fair value measure that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement. Cash Equivalents We consider all highly liquid investments with original maturities of less than three months to be cash equivalents. Cash equivalents at September 30, 2022 and October 1, 2021 consisted primarily of money market mutual funds and overnight bank deposits. Receivables, Contract Assets and Contract Liabilities Receivables include amounts billed, net and unbilled receivables. Amounts billed, net consist of amounts invoiced to clients in accordance with the terms of our client contracts and are shown net of an allowance for doubtful accounts. We anticipate that substantially all of such billed amounts will be collected over the next twelve months. Unbilled receivables and other, which represent an unconditional right to payment subject only to the passage of time in connection with our client contracts, are reclassified to amounts billed when they are billed under the terms of the contract. We anticipate that substantially all of such unbilled amounts will be billed and collected over the next twelve months. Contract assets represent unbilled amounts where the right to payment is subject to more than merely the passage of time and includes performance-based incentives and services provided ahead of agreed contractual milestones. Contract assets are transferred to unbilled receivables when the right to consideration becomes unconditional and are transferred to amounts billed upon invoicing. Contract liabilities represent amounts billed to clients in excess of revenue recognized to date. We anticipate that substantially all such amounts will be earned over the next twelve months. In order to manage short-term liquidity and credit exposure, Jacobs may sell current customer receivables to third parties. When Jacobs sells customer receivables to third parties it accelerates the receipt of cash that would otherwise have been collected from customers and records these transactions as reductions to the receivable amounts. Jacobs does not maintain continuing involvement in these arrangements. Property, Equipment, and Improvements Property, equipment and improvements are carried at cost, and are shown net of accumulated depreciation and amortization in the accompanying Consolidated Balance Sheets. Depreciation and amortization is computed primarily by using the straight-line method over the estimated useful lives of the assets. The cost of leasehold improvements is amortized using the straight-line method over the lesser of the estimated useful life of the asset or the remaining term of the related lease. Estimated useful lives range from 20 to 40 years for buildings, from 3 to 10 years for equipment and from 4 to 10 years for leasehold improvements. Goodwill and Other Intangible Assets Goodwill represents the excess of the cost of an acquired business over the fair value of the net tangible and intangible assets acquired. Goodwill and intangible assets with indefinite lives are not amortized; instead, on an annual basis we test goodwill and intangible assets with indefinite lives for possible impairment. Intangible assets with finite lives are amortized on a straight-line basis over the useful lives of those assets. For purposes of impairment testing, goodwill is assigned to the applicable reporting units based on the current reporting structure. We have determined that our operating segments are also our reporting units based on management’s conclusion that the components comprising each of our operating segments share similar economic characteristics and meet the aggregation criteria in accordance with ASC 350. We perform our annual goodwill impairment assessment as of the first day of the fourth fiscal quarter each year. We begin with the qualitative assessment of whether it is more likely than not that a reporting unit’s fair value is less than its carrying value before applying the quantitative assessment described below. If it is determined through the evaluation of events or circumstances that the carrying value may not be recoverable, the Company then compares the fair value of each reporting unit with its carrying amount. If the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recognized. During 2022, we completed our annual goodwill impairment test and qualitatively determined that none of our goodwill was impaired. We have determined that the fair value of our reporting units exceeded their respective carrying values for the Consolidated Balance Sheets presented. Impairment of Long-Lived Assets Our long-lived assets other than goodwill principally consist of right-of-use (ROU) lease assets, property, equipment and improvements, and finite-lived intangible assets. These long-lived assets are evaluated for impairment for each of our asset groups in accordance with ASC 360 by first identifying whether indicators of impairment exist. If such indicators are present, we assess long-lived asset groups for recoverability based on estimated future undiscounted cash flows. For asset groups where the recoverability test fails, the fair value of each asset group is then estimated and compared to its carrying amount. An impairment loss is recognized for the amount by which an asset group’s carrying value exceeds its fair value. Foreign Currencies In preparing our Consolidated Financial Statements, it is necessary to translate the financial statements of our subsidiaries operating outside the U.S., which are denominated in currencies other than the U.S. dollar, into the U.S. dollar. In accordance with U.S. GAAP, revenues and expenses of operations outside the U.S. are translated into U.S. dollars using weighted-average exchange rates for the applicable periods being translated while the assets and liabilities of operations outside the U.S. are generally translated into U.S. dollars using period-end exchange rates. The net effect of foreign currency translation adjustments is included in stockholders’ equity as a component of accumulated other comprehensive income (loss) in the accompanying Consolidated Balance Sheets. Share-Based Payments We measure the value of services received from employees and directors in exchange for an award of an equity instrument based on the grant-date fair value of the award. The fair value is recognized as a non-cash cost on a straight-line basis over the period the individual provides services, which is typically the vesting period of the award with the exception of awards containing an internal performance measure, such as Earnings Per Share growth and Return on Invested Capital, which is recognized on a straight-line basis over the vesting period subject to the probability of meeting the performance requirements and adjusted for the number of shares expected to be earned. The cost of these awards is recorded in selling, general and administrative expense in the accompanying Consolidated Statements of Earnings. Concentrations of Credit Risk Our cash balances and cash equivalents are maintained in accounts held by major banks and financial institutions located in North America, South America, Europe, the Middle East, India, Australia, Africa and Asia. In the normal course of business, and consistent with industry practices, we grant credit to our clients without requiring collateral. Concentrations of credit risk is the risk that, if we extend a significant amount of credit to clients in a specific geographic area or industry, we may experience disproportionately high levels of default if those clients are adversely affected by factors particular to their geographic area or industry. Concentrations of credit risk relative to trade receivables are limited due to our diverse client base, which includes the U.S. federal government and multi-national corporations operating in a broad range of industries and geographic areas. Additionally, in order to mitigate credit risk, we continually evaluate the credit worthiness of our major commercial clients. Leases The Company accounts for its leases in accordance with ASC 842, Leases ("ASC 842") . ASC 842 requires lessees to recognize assets and liabilities for most leases. The Company determines if an arrangement is a lease at contract inception. A lease exists when a contract conveys to the customer the right to control the use of an identified asset for a period of time in exchange for consideration. The definition of a lease embodies two conditions: (1) there is an identified asset in the contract, and (2) the customer has the right to control the use of the identified asset. Lessees are required to classify leases as either finance or operating leases. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. ASC 842 provided several optional practical expedients for use in transition to and ongoing application of ASC 842. The Company elected to utilize the package of practical expedients in ASC 842-10-65-1(f) that, upon adoption of ASC 842, allows entities to (1) not reassess whether any expired or existing contracts are or contain leases, (2) retain the classification of leases (e.g., operating or finance lease) existing as of the date of adoption and (3) not reassess initial direct costs for any existing leases. The Company did not elect the practical expedient pertaining to the use of hindsight. The Company elected to utilize the practical expedient in ASC 842-10-15-37 in which the Company has chosen to account for each separate lease component of a contract and its associated non-lease components as a single lease component. The Company’s right-of use assets and lease liabilities relate to real estate, project assets used in connection with long-term construction contracts, IT assets and vehicles. The Company’s leases have remaining lease terms of one year to thirteen years. The Company’s lease obligations are primarily for the use of office space and are primarily operating leases. Certain of the Company’s leases contain renewal, extension, or termination options. The Company assesses each option on an individual basis and will only include options reasonably certain of exercise in the lease term. The Company generally considers the base term to be the term provided in the contract. None of the Company’s lease agreements contain material options to purchase the leased property, material residual value guarantees, or material restrictions or covenants. Long-term project asset and vehicle leases (leases with terms greater than twelve months), along with all real estate and IT asset leases, are recorded on the consolidated balance sheet at the present value of the minimum lease payments not yet paid. Because the Company primarily acts as a lessee and the rates implicit in its leases are not readily determinable, the Company generally uses its incremental borrowing rate on the lease commencement date to calculate the present value of future lease payments. Certain leases include payments that are based solely on an index or rate. These variable lease payments are included in the calculation of the ROU asset and lease liability and are initially measured using the index or rate at the lease commencement date. Other variable lease payments, such as payments based on use and for property taxes, insurance, or common area maintenance that are based on actual assessments are excluded from the ROU asset and lease liability and are expensed as incurred. In addition to the present value of the future lease payments, the calculation of the ROU asset also includes any deferred rent, lease prepayments and initial direct costs of obtaining the lease, such as commissions. Certain lease contracts contain nonlease components such as maintenance and utilities. The Company has made an accounting policy election, as allowed under ASC 842-10-15-37 and discussed above, to capitalize both the lease component and nonlease components of its contracts as a single lease component for all of its right-of-use assets. Short-term project asset and vehicle leases (project asset and vehicle leases with an initial term of twelve months or less or leases that are cancellable by the lessee and lessor without significant penalties) are not recorded on the consolidated balance sheet and are expensed on a straight-line basis over the lease term. The majority of the Company’s short-term leases relate to equipment used on construction projects. These leases are entered into at agreed upon hourly, daily, weekly or monthly rental rates for an unspecified duration and typically have a termination for convenience provision. Such equipment leases are considered short-term in nature unless it is reasonably certain that the equipment will be leased for a term greater than twelve months. Pensions We use certain assumptions and estimates in order to calculate periodic pension cost and the value of the assets and liabilities of our pension plans. These assumptions involve discount rates, investment returns and projected salary increases, among others. Changes in the actuarial assumptions may have a material effect on the plans’ liabilities and the projected pension expense. We use a corridor approach to amortize actuarial gains and losses. Under this approach, net gains or losses in excess of ten percent of the larger of the pension benefit obligation or the market-related value of the assets are amortized on a straight-line basis. The period of amortization is the average remaining service of active participants who are expected to receive benefits under certain plans and the average remaining future lifetime of plan participants for certain plans. We measure our defined benefit plan assets and obligations as of the end of the month closest to their fiscal year end, which is September 30, 2022 as the alternative measurement date in accordance with FASB guidance ASU 2015-04, Compensation Retirement Benefit (Topic 715): Practical Expedient for the Measurement Date of an Employer’s Defined Benefit Obligation and Plan Asset . This guidance allows employers with fiscal year ends that do not coincide with a calendar month end to make an accounting policy election to measure defined benefit plan assets and obligations as of the end of the month closest to their fiscal year end. Redeemable Noncontrolling Interests In connection with the PA Consulting investment, the Company recorded redeemable noncontrolling interests, representing the interest holders' 35% equity interest in the form of preferred and common shares of PA Consulting. The preferred shares are entitled to a cumula

Revenue Accounting for Contract

Revenue Accounting for Contracts	12 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue Accounting for Contracts	Revenue Accounting for Contracts Disaggregation of Revenues Our revenues are principally derived from contracts to provide a diverse range of technical, professional, and construction services to a large number of industrial, commercial, and governmental clients. We provide a broad range of engineering, design, and architectural services; construction and construction management services; operations and maintenance services; and process, scientific, and systems consulting services. We provide our services through offices and subsidiaries located primarily in North America, South America, Europe, the Middle East, India, Australia, Africa, and Asia. We provide our services under cost-reimbursable and fixed-price contracts. Our contracts are with many different customers in numerous industries. Refer to Note 20- Segment Information for additional information on how we disaggregate our revenues by reportable segment. The following table further disaggregates our revenue by geographic area for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Revenues: United States $ 9,875,252 $ 9,671,281 $ 10,158,508 Europe 3,488,317 3,140,114 2,253,284 Canada 269,386 227,692 227,067 Asia 140,663 114,118 117,698 India 114,235 70,772 50,618 Australia and New Zealand 706,283 647,866 537,076 South America and Mexico — — 11 Middle East and Africa 328,689 220,789 222,713 Total $ 14,922,825 $ 14,092,632 $ 13,566,975 The following table presents the revenues earned directly or indirectly from the U.S. federal government and its agencies, expressed as a percentage of total revenues: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 31% 33% 33% Contract Liabilities Contract liabilities represent amounts billed to clients in excess of revenue recognized to date. Revenue recognized for the year ended September 30, 2022 that was included in the contract liability balance on October 1, 2021 was $422 million. Revenue recognized for the year ended October 1, 2021 that was included in the contract liability balance on October 2, 2020 was $405 million. Remaining Performance Obligations The Company’s remaining performance obligations as of September 30, 2022 represent a measure of the total dollar value of work to be performed on contracts awarded and in progress. The Company had approximately $15.0 billion in remaining performance obligations as of September 30, 2022. The Company expects to recognize 52% of our remaining performance obligations within the next twelve months and the remaining 48% thereafter. Although remaining performance obligations reflect business that is considered to be firm, cancellations, scope adjustments, foreign currency exchange fluctuations or project deferrals may occur that impact their volume or the expected timing of their recognition. Remaining performance obligations are adjusted to reflect any known project

Earnings Per Share and Certain

Earnings Per Share and Certain Related Information	12 Months Ended
	Sep. 30, 2022
Earnings Per Share Reconciliation [Abstract]
Earnings Per Share and Certain Related Information	Earnings Per Share and Certain Related Information Basic and Diluted Earnings Per Share Basic and diluted earnings per share (“EPS”) are computed using the two-class method, which is an earnings allocation method that determines EPS for common shares and participating securities. The undistributed earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. Participating securities and common shares have equal rights to undistributed earnings. Net earnings used for the purpose of determining basic and diluted EPS is determined by taking net earnings, less earnings available to participating securities and the preferred redeemable noncontrolling interests redemption value adjustment associated with the PA Consulting transaction. The following table reconciles the denominator used to compute basic EPS to the denominator used to compute diluted EPS for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Numerator for Basic and Diluted EPS: Net earnings attributable to Jacobs from continuing operations $ 644,071 $ 467,022 $ 353,861 Preferred Redeemable Noncontrolling interests redemption value adjustment (See Note 14- PA Consulting Business Combination ) — (57,307) — Net earnings from continuing operations allocated to participating securities — — (72) Net earnings from continuing operations allocated to common stock for EPS calculation $ 644,071 $ 409,715 $ 353,789 Net earnings attributable to Jacobs from discontinued operations $ (32) $ 10,008 $ 137,984 Net earnings from discontinued operations allocated to participating securities — — (28) Net earnings from discontinued operations allocated to common stock for EPS calculation $ (32) $ 10,008 $ 137,956 Net earnings allocated to common stock for EPS calculation $ 644,039 $ 419,723 $ 491,745 Denominator for Basic and Diluted EPS: Weighted average basic shares 128,665 130,194 131,541 Shares allocated to participating securities — — (27) Shares used for calculating basic EPS attributable to common stock 128,665 130,194 131,514 Effect of dilutive securities: Stock compensation plans 780 1,080 1,207 Shares used for calculating diluted EPS attributable to common stock 129,445 131,274 132,721 Net Earnings Per Share: Basic Net Earnings from Continuing Operations Per Share $ 5.01 $ 3.15 $ 2.69 Basic Net Earnings from Discontinued Operations Per Share $ — $ 0.08 $ 1.05 Basic Earnings Per Share: $ 5.01 $ 3.22 $ 3.74 Diluted Net Earnings from Continuing Operations Per Share $ 4.98 $ 3.12 $ 2.67 Diluted Net Earnings from Discontinued Operations Per Share $ — $ 0.08 $ 1.04 Diluted Earnings Per Share: $ 4.98 $ 3.20 $ 3.71 Share Repurchases On January 16, 2020, the Company's Board of Directors authorized a share repurchase program of up to $1.0 billion of the Company's common stock, to expire on January 15, 2023 (the "2020 Repurchase Authorization"). In the fourth quarter of fiscal 2021 the Company launched an accelerated share repurchase program by advancing $250 million to a financial institution in a privately negotiated transaction, with final non-cash settlement on the program during the first quarter of fiscal 2022 of 342,054 shares. The following table summarizes the activity under the 2020 Repurchase Authorizations during fiscal 2022: Amount Authorized Average Price Per Share (1) Shares Repurchased Total Shares Retired $1,000,000,000 $133.05 2,472,728 2,472,728 (1) Includes commissions paid and calculated at the average price per share As of September 30, 2022, the Company has $501.0 million remaining under the 2020 Repurchase Authorization. Our share repurchase programs do not obligate the Company to purchase any shares. Share repurchases may be executed through various means including, without limitation, accelerated share repurchases, open market transactions, privately negotiated transactions, purchases pursuant to a Rule 10b5-1 plan or otherwise. The authorization for the share repurchase programs may be terminated, increased or decreased by the Company’s Board of Directors in its discretion at any time. The timing, amount and manner of share repurchases may depend upon market conditions and economic circumstances, availability of investment opportunities, the availability and costs of financing, currency fluctuations, the market price of the Company's common stock, other uses of capital and other factors. Common and Preferred Stock Jacobs is authorized to issue two classes of capital stock designated “common stock” and “preferred stock” (each has a par value of $1.00 per share). The preferred stock may be issued in one or more series. The number of shares to be included in a series as well as each series’ designation, relative powers, dividend and other preferences, rights and qualifications, redemption provisions and restrictions are to be fixed by the Company’s Board of Directors at the time each series is issued. Except as may be provided by the Company’s Board of Directors in a preferred stock designation, or otherwise provided for by statute, the holders of shares of common stock have the exclusive right to vote for the election of directors and on all other matters requiring stockholder action. The holders of shares of common stock are entitled to dividends if and when declared by the Company’s Board of Directors from whatever assets are legally available for that purpose. Dividends On September 15, 2022, the Company’s Board of Directors declared a quarterly dividend of $0.23 per share of the Company’s common stock which was paid on October 28, 2022, to shareholders of record on the close of business on September 30, 2022. Future dividend declarations are subject to review and approval by the Company’s Board of Directors. Dividends paid through September 30, 2022 and the preceding fiscal year are as follows: Declaration Date Record Date Payment Date Cash Amount (per share) July 13, 2022 July 29, 2022 August 26, 2022 $0.23 April 28, 2022 May 27, 2022 June 24, 2022 $0.23 January 26, 2022 February 25, 2022 March 25, 2022 $0.23 September 23, 2021 October 15, 2021 October 29, 2021 $0.21 July 14, 2021 July 30, 2021 August 27, 2021 $0.21 April 22, 2021 May 28, 2021 June 25, 2021 $0.21 January 27, 2021 February 26, 2021 March 26, 2021 $0.21

Goodwill and Intangibles

Goodwill and Intangibles	12 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangibles	Goodwill and Intangibles The carrying value of goodwill associated with continuing operations and appearing in the accompanying Consolidated Balance Sheets September 30, 2022 and October 1, 2021 was as follows (in thousands): Critical Mission Solutions People & Places Solutions PA Consulting Total Balance October 1, 2021 $ 2,550,631 $ 3,240,783 $ 1,405,586 $ 7,197,000 Acquired 195,756 116,525 17,245 329,526 Post-Acquisition Adjustments — — 5,720 5,720 Foreign currency translation and other (30,194) (47,995) (269,399) (347,588) Balance September 30, 2022 $ 2,716,193 $ 3,309,313 $ 1,159,152 $ 7,184,658 The following table provides certain information related to the Company’s acquired intangibles in the accompanying Consolidated Balance Sheets for the year ended September 30, 2022 (in thousands): Customer Relationships, Contracts and Backlog Developed Technology Trade Names Total Balances, October 1, 2021 $ 1,309,061 $ 40,020 $ 216,677 $ 1,565,758 Acquired 101,527 62,000 392 163,919 Amortization (175,592) (12,055) (10,955) (198,602) Foreign currency translation and other (98,558) (1,034) (37,431) (137,023) Balances, September 30, 2022 $ 1,136,438 $ 88,931 $ 168,683 $ 1,394,052 Weighted Average Amortization Period (years) 7 7 18 9 The weighted average amortization period includes the effects of foreign currency translation. The following table presents estimated amortization expense of intangible assets for fiscal 2023 and for the succeeding years. The amounts below include preliminary amortization estimates for the StreetLight opening balance sheet fair values that are still preliminary and are subject to change. Fiscal Year (in millions) 2023 $ 194.8 2024 194.4 2025 194.0 2026 171.3 2027 140.1 Thereafter 499.5 Total $ 1,394.1

Other Financial Information

Other Financial Information	12 Months Ended
	Sep. 30, 2022
Other Financial Information [Abstract]
Other Financial Information	Other Financial Information Receivables and contract assets The following table presents the components of receivables and contract assets appearing in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 as well as certain other related information (in thousands): September 30, 2022 October 1, 2021 Components of receivables: Amounts billed, net $ 1,400,088 $ 1,278,087 Unbilled receivables and other 1,523,249 1,343,588 Contract assets 482,044 479,743 Total receivables and contract assets, net $ 3,405,381 $ 3,101,418 Other information about receivables: Amounts due from the United States federal government included above, net of contract liabilities $ 749,323 $ 563,009 Property, Equipment and Improvements, Net The following table presents the components of our property, equipment and improvements, net at September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Land $ 478 $ 970 Buildings 46,244 52,822 Equipment 643,805 586,302 Leasehold improvements 179,187 201,522 Construction in progress 34,880 21,188 904,594 862,804 Accumulated depreciation and amortization (557,918) (509,687) $ 346,676 $ 353,117 The following table presents our property, equipment and improvements, net by geographic area for the years ended September 30, 2022 and October 1, 2021 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 Property, equipment and improvements, net: United States $ 226,639 $ 229,752 Europe 87,331 95,746 Canada 5,210 2,076 Asia 2,578 2,170 India 9,659 11,545 Australia and New Zealand 13,211 10,401 Middle East and Africa 2,048 1,427 Total $ 346,676 $ 353,117 See discussion in Note 10- Leases , regarding impairments recorded in the current year relating to the Company's real estate lease portfolio and related property, equipment and improvements, net. Accrued Liabilities The following table presents the components of “Accrued liabilities” shown in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Accrued payroll and related liabilities $ 947,547 $ 1,042,265 Project-related accruals 28,178 56,083 Non project-related accruals and other 279,062 239,851 Insurance liabilities 63,183 73,016 Sales and other similar taxes 93,500 94,393 Dividends payable 30,292 27,951 Total $ 1,441,762 $ 1,533,559 Accumulated Other Comprehensive Income The following table presents the Company's roll forward of accumulated income (loss) after-tax for the years ended September 30, 2022 and October 1, 2021 (in thousands): Change in Pension and Retiree Medical Plan Liabilities Foreign Currency Translation Adjustment (1) Gain/(Loss) on Cash Flow Hedges Total Balance at October 2, 2020 $ (498,726) $ (419,715) $ (14,616) $ (933,057) Other comprehensive income (loss) 94,606 12,475 14,339 121,420 Reclassifications from other comprehensive income (loss) 9,559 — 7,636 17,195 Balance at October 1, 2021 $ (394,561) $ (407,240) $ 7,359 $ (794,442) Other comprehensive income (loss) 87,034 (378,800) 108,555 (183,211) Reclassifications from other comprehensive income (loss) 132 — 2,391 2,523 Balance at September 30, 2022 $ (307,395) $ (786,040) $ 118,305 $ (975,130) (1) Included in the overall foreign currency translation adjustment for the years ended September 30, 2022 and October 1, 2021 is $144.3 million and $(0.9) million, respectively, in unrealized gains (losses) on long-term foreign currency denominated intercompany loans not anticipated to be settled in the foreseeable future. Included in the Company’s cumulative net unrealized gains from interest rate and cross currency swaps recorded in accumulated other comprehensive income as of September 30, 2022 were approximately $21 million in unrealized gains, net of taxes, which are expected to be realized in earnings during the twelve months subsequent to September 30, 2022.

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The following table presents the components of our consolidated income taxes for continuing operations for years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Current income tax (benefit) expense from continuing operations: Federal $ (35,291) $ 91,313 $ (37,030) State 4,526 30,886 (5,021) Foreign 79,822 38,959 41,616 Total current tax expense from continuing operations 49,057 161,158 (435) Deferred income tax expense (benefit) from continuing operations: Federal 56,526 35,109 53,485 State 17,178 21,826 7,133 Foreign 38,142 56,688 (4,863) Total deferred tax expense from continuing operations 111,846 113,623 55,755 Consolidated income tax expense from continuing operations $ 160,903 $ 274,781 $ 55,320 Deferred taxes reflect the tax effects of temporary differences between the amounts recorded as assets and liabilities for financial reporting purposes and the comparable amounts recorded for income tax purposes. Deferred tax assets and liabilities are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The following table presents the components of our net deferred tax (liabilities) assets at September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Deferred tax assets: Obligations relating to: Other employee benefit plans 138,897 156,931 Net operating losses 132,999 197,929 Foreign tax credit 83,697 87,689 Contract revenues and costs — 81,633 Lease liability 138,635 155,064 Unrealized foreign exchange loss 46,005 — Other 13,005 19,689 Valuation allowance (113,483) (188,662) Gross deferred tax assets 439,755 510,273 Deferred tax liabilities: Contract revenues and costs (6,007) — Depreciation and amortization (431,946) (436,324) Lease right of use asset (71,658) (93,338) Partnership investment (52,787) (72,560) Hedge Investments (38,994) (13,754) Unrealized Foreign Exchange Gain (45,754) — Other (30,206) (5,484) Gross deferred tax liabilities (677,352) (621,460) Net deferred tax liabilities $ (237,597) $ (111,187) Certain amounts have been reclassified to conform to current year presentation. Tax law changes were enacted in the United Kingdom that, among other provisions, will increase the corporate tax rate to 25% from 19% effective April 1, 2023. The rate change resulted in an increase of $3.2 million and $25.6 million to our deferred income tax expense for the years ended September 30, 2022 and October 1, 2021, respectively. Our current income tax expense in the United Kingdom will be based on the new rate beginning in April 2023. A valuation allowance is recorded to reduce deferred tax assets to the amount that is more likely than not to be realized based on an assessment of positive and negative evidence, including estimates of future taxable income necessary to realize future deductible amounts. The valuation allowance was $113.5 million at September 30, 2022 and $188.7 million at October 1, 2021. This $75.2 million change in the valuation allowance is attributable mainly to $33.1 million in a change in the realizability of foreign tax credits due to a change in the U.S. foreign tax credit regulations, a decrease of $26.0 million relates to a change in judgment on the realizability of domestic deferred tax assets which are capital in nature, and a decrease of $16.1 million relating to various other items. At September 30, 2022 and October 1, 2021, the domestic and international net operating loss (NOL) carryforwards totaled $491.3 million and $760.4 million, resulting in an NOL deferred tax asset of $133.0 million and $197.9 million, respectively. The Company's net operating losses have various expiration periods between 2023 and indefinite periods. At September 30, 2022, the Company has foreign tax credit carryforwards of $83.7 million, which has a partial valuation allowance of $55.4 million, expiring between 2023 and 2032. The following table presents the income tax benefits from continuing operations realized from the exercise of non-qualified stock options and disqualifying dispositions of stock sold under our employee stock purchase plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in millions): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 $ 2.2 $ 9.9 $ 10.2 The following table reconciles total income tax expense from continuing operations using the statutory U.S. federal income tax rate to the consolidated income tax expense for continuing operations shown in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (dollars in thousands): For the Years Ended September 30, 2022 % October 1, 2021 % October 2, 2020 % Statutory amount $ 184,033 21.0 % $ 146,078 21.0 % $ 92,652 21.0 % State taxes, net of the federal benefit 19,316 2.2 % 14,564 2.1 % 7,254 1.6 % Exclusion of tax on non-controlling interests (7,533) (0.9) % (7,999) (1.1) % (6,622) (1.5) % Foreign: Difference in tax rates of foreign operations (2,516) (0.3) % 3,684 0.5 % (6,267) (1.4) % Expense/(benefit) from foreign valuation allowance change 2,982 0.3 % 2,148 0.3 % (16,861) (3.8) % Nondeductible compensation — — % 48,727 7.0 % — — % U.S. tax cost (benefit) of foreign operations 48,843 5.6 % 35,228 5.1 % 42,992 9.7 % Tax differential on foreign earnings 49,309 5.6 % 89,787 12.9 % 19,864 4.5 % Foreign tax credits (33,734) (3.8) % (25,230) (3.6) % (26,471) (6.0) % Tax Rate Change 3,210 0.4 % 25,588 3.7 % (6,811) (1.5) % Valuation allowance (59,121) (6.7) % 38,928 5.6 % — — % Uncertain tax positions (1,439) (0.2) % 978 0.1 % (11,338) (2.6) % Other items: Energy efficient commercial buildings deduction (2,681) (0.3) % (3,760) (0.5) % (7,267) (1.6) % Disallowed officer compensation 6,034 0.7 % 6,689 1.0 % 5,081 1.2 % Stock compensation (2,168) (0.2) % (9,946) (1.4) % (10,234) (2.3) % Other items – net 5,677 0.6 % (896) (0.1) % (788) (0.2) % Total other items 6,862 0.8 % (7,913) (1.1) % (13,208) (3.0) % Taxes on income from continuing operations $ 160,903 18.4 % $ 274,781 39.5 % $ 55,320 12.5 % The following table presents income tax payments, net made during the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in millions): September 30, 2022 October 1, 2021 October 2, 2020 $ 113.9 $ 75.6 $ 39.8 The following table presents the components of our consolidated earnings from continuing operations before taxes for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 United States earnings $ 415,673 $ 634,820 $ 208,302 Foreign earnings 460,674 60,782 232,901 $ 876,347 $ 695,602 $ 441,203 We do not record a deferred tax liability for unremitted earnings of our foreign subsidiaries to the extent that the earnings meet the indefinite reversal criteria. This criteria is met if the foreign subsidiary has invested, or will invest, the earnings indefinitely. The decision as to the amount of unremitted earnings that we intend to maintain in non-U.S. subsidiaries considers items including, but not limited to, forecasts and budgets of financial needs of cash for working capital, liquidity plans, and expected cash requirements in the U.S. As of September 30, 2022, we had not recognized a deferred tax liability on approximately $168.0 million of undistributed earnings for certain foreign subsidiaries, because these earnings are intended to be indefinitely reinvested. If such earnings were distributed, some countries may impose additional taxes. The unrecognized deferred tax liability (the amount payable if distributed) is approximately $13.1 million. The Company has various long-term foreign currency denominated intercompany loans not anticipated to be settled in the foreseeable future. Due to the long-term nature of the loan, the foreign currency gains (losses) resulting from re-measurement are generally recognized as a component of accumulated other comprehensive income (loss). Deferred taxes are not provided on the unrealized gains of approximately $101.7 million because the intercompany loans and the related gains (losses) on the loans denominated in the functional currencies of the subsidiaries are viewed as a part of the Company’s net investment in the subsidiaries and are considered to be indefinitely reinvested by the Company. The unrecognized deferred taxes are approximately $25 million as of September 30, 2022. The Company accounts for unrecognized tax benefits in accordance with ASC Topic 740, Income Taxes . It accounts for interest and penalties on unrecognized tax benefits as interest and penalties reported above the line (i.e., not as part of income tax expense). The Company’s liability for gross unrecognized tax benefits was $81.9 million and $91.9 million at September 30, 2022 and October 1, 2021, respectively, after ASU 2013-11 netting of $7.0 million and $21.7 million, respectively. If recognized, $73.5 million would affect the Company’s consolidated effective income tax rate. The Company had $43.5 million and $41.6 million in accrued interest and penalties at September 30, 2022 and October 1, 2021, respectively. The Company estimates that, within twelve months, we may realize a decrease in our uncertain tax positions of approximately $2.2 million as a result of concluding various tax audits and closing tax years. As of September 30, 2022, the Company’s U.S. federal income tax returns for tax years 2009 and forward remain subject to examination. The following table presents the reconciliation of the beginning and ending amount of unrecognized tax benefits, with StreetLight and PA Consulting related impacts added for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Balance, beginning of year $ 113,633 $ 102,484 $ 104,355 Acquisitions/Divestitures 192 7,639 — Additions based on tax positions related to the current year 1,136 7,088 1,064 Additions for tax positions of prior years 1,207 1,711 7,472 Reductions for tax positions of prior years (3,672) (4,851) (6,695) Settlement (23,603) (438) (3,712) Balance, end of year $ 88,893 $ 113,633 $ 102,484 As further discussed in Note 14, PA Consulting Business Combination and Note 15, Other Business Combinations , the Company has made several acquisitions and a strategic investment, all of which were accounted for as stock purchases and the tax attributes of the net assets acquired were carried over, with the exception of the Buffalo Group, which was treated as an asset acquisition and the net assets were stepped up to fair value.

Joint Ventures and VIE's and Ot

Joint Ventures and VIE's and Other Investments	12 Months Ended
	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Joint Ventures and VIE's and Other Investments	Joint Ventures, VIEs and Other Investments For consolidated joint ventures, the entire amount of the revenue recognized for services performed and the costs associated with these services, including the services provided by the other joint venture partners, are included in the Company's results of operations. Likewise, the entire amount of each of the assets and liabilities are included in the Company’s consolidated balance sheet. There are no consolidated VIEs that have debt or credit facilities. Summary financial information of consolidated VIEs is as follows (in millions): September 30, 2022 October 1, 2021 Current assets $ 353.9 $ 289.7 Non-Current assets — 0.1 Total assets $ 353.9 $ 289.8 Current liabilities $ 228.1 $ 220.8 Total liabilities $ 228.1 $ 220.8 For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Revenue $ 1,253.8 $ 1,037.3 $ 912.9 Direct cost of contracts (985.5) (910.1) (807.9) Gross profit 268.3 127.2 105.0 Net earnings $ 92.3 $ 84.3 $ 72.6 Unconsolidated joint ventures are accounted for under the equity method or proportionate consolidation. Proportionate consolidation is used for joint ventures that include unincorporated legal entities and activities of the joint venture are construction-related. For those joint ventures accounted for under proportionate consolidation, only the Company’s pro rata share of assets, liabilities, revenue, and costs are included in the Company’s balance sheet and results of operations. For the proportionate consolidated VIEs, the carrying value of assets and liabilities was $109.3 million and $129.2 million as of September 30, 2022, respectively and $115.1 million and $129.5 million as of October 1, 2021, respectively. For those joint ventures accounted for under the equity method, the Company's investment balances for the joint venture is included in other noncurrent Assets: miscellaneous on the balance sheet and the Company’s pro rata share of net income is included in revenue. In limited cases, there are basis differences between the equity in the joint venture and Jacobs' investment created when Jacobs purchased their share of the joint venture. These basis differences are amortized based on an internal allocation to underlying net assets, excluding allocations to goodwill. Our investments in equity method joint ventures on the Consolidated Balance Sheets as of September 30, 2022 and October 1, 2021 were a net asset of $56.6 million and $121.3 million, respectively. During the years ended September 30, 2022, October 1, 2021, and October 2, 2020, we recognized income from equity method joint ventures of $36.5 million, $60.9 million, and $82.2 million, respectively. Accounts receivable from unconsolidated joint ventures accounted for under the equity method is $21.1 million and $19.7 million as of September 30, 2022 and October 1, 2021, respectively. The Company currently holds a 24.5% interest in AWE Management Ltd ("AWE") that is accounted for under the equity method, and the carrying value of the Company’s investment as of October 2, 2020 was approximately $38 million. As of October 2, 2020, AWE was under a contractual operating arrangement with the UK Ministry of Defence (MoD) with multiple years remaining under the arrangement. On November 2, 2020, the MoD unexpectedly announced plans to change its current operating agreements with AWE that would result in the early termination of the current contract in 2021. During the fiscal year ended October 1, 2021, the Company recorded other-than-temporary impairment charges on its investment in AWE in the amount of $38.5 million, which were included in miscellaneous income (expense), net in the consolidated statement of earnings. During fiscal year 2022, the contractual operating arrangement with MoD was terminated which has resulted in the wind down and full impairment of the AWE Joint Venture with immaterial activity expected going forward. The Company held a cost method investment in C3.ai, Inc. ("C3") and in the first quarter of fiscal 2021, C3 completed an initial public offering and as a result the Company carried its investment in C3 at fair value, with changes

Borrowings

Borrowings	12 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Borrowings	Borrowings The following table presents certain information regarding the Company’s long-term debt at September 30, 2022 and October 1, 2021 (dollars in thousands): Interest Rate Maturity September 30, 2022 October 1, 2021 Revolving Credit Facility Benchmark + applicable margin (1) (2) March 2024 $ 1,105,294 $ 327,794 2021 Term Loan Facility Benchmark + applicable margin (1) (3) March 2024 923,580 1,081,724 2020 Term Loan Facility Benchmark + applicable margin (1) (4) March 2025 (5) 882,263 988,940 Fixed-rate notes due: Senior Notes, Series A 4.27% May 2025 190,000 190,000 Senior Notes, Series B 4.42% May 2028 180,000 180,000 Senior Notes, Series C 4.52% May 2030 130,000 130,000 Less: Current Portion (4) (50,415) (53,456) Less: Deferred Financing Fees (3,466) (5,069) Total Long-term debt, net $ 3,357,256 $ 2,839,933 (1) During the year ended September 30, 2022, the aggregate principal amounts denominated in British pounds under the Revolving Credit Facility, 2021 Term Loan Facility and 2020 Term Loan Facility transitioned from underlying LIBOR benchmarked rates to SONIA rates. Borrowings denominated in U.S. dollars remained benchmarked to LIBOR rates. (2) Depending on the Company’s Consolidated Leverage Ratio (as defined in the credit agreement governing the Revolving Credit Facility (defined below)), U.S. dollar denominated borrowings under the Revolving Credit Facility bear interest at either a eurocurrency rate plus a margin of between 0.875% and 1.625% or a base rate plus a margin of between 0% and 0.625%.The applicable LIBOR rates, including applicable margins, at September 30, 2022 and October 1, 2021 were approximately 4.08% and 1.45%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.875% and 1.625%. There were no amounts drawn in British pounds as of September 30, 2022. (3) Depending on the Company’s Consolidated Leverage Ratio (as defined in the credit agreement governing the 2021 Term Loan Facility (defined below)), U.S. dollar denominated borrowings under the 2021 Term Loan Facility bear interest at either a eurocurrency rate plus a margin of between 0.875% and 1.625% or a base rate plus a margin of between 0% and 0.625%. The applicable LIBOR rate, including applicable margin, at September 30, 2022 and October 1, 2021was approximately 4.06% and 1.43%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.875% and 1.625%, which was approximately 3.60% at September 30, 2022. (4) Depending on the Company’s Consolidated Leverage Ratio (as defined in the credit agreement governing the 2020 Term Loan Facility (defined below)), U.S. dollar denominated borrowings under the 2020 Term Loan Facility bear interest at either a eurocurrency rate plus a margin of between 0.875% and 1.5% or a base rate plus a margin of between 0% and 0.5%. The applicable LIBOR rates, including applicable margins, at September 30, 2022 and October 1, 2021 were approximately 4.49% and 1.45%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin between 0.875% and 1.5%, which was approximately 3.60% at September 30, 2022. (5) The 2020 Term Loan requires quarterly principal repayments of 1.25%, or $9.125 million and £3.125 million, of the aggregate initial principal amount borrowed. In connection with the Company's implementation of a new holding company structure, which was completed in August 2022, the Company launched an offer to repurchase its outstanding Senior Notes at par plus accrued and unpaid interest, and without any make-whole premium. On October 7, 2022, the Company repaid $481 million of Senior Notes held by holders who accepted the offer with proceeds from our long-term Revolving Credit Facility. The remaining $19 million of Senior Notes outstanding are Senior Notes, Series B due in May 2028 as indicated in the table above. The Revolving Credit Facility and Term Loan Facilities (defined below) were amended to permit the implementation of the holding company. On February 7, 2014, the Company and certain of its subsidiaries entered into a $1.6 billion long-term unsecured, revolving credit facility (as amended, the “2014 Revolving Credit Facility”) with a syndicate of U.S. and international banks and financial institutions. On March 27, 2019, the Company entered into a second amended and restated credit agreement (the "Revolving Credit Facility") which amended and restated the 2014 Revolving Credit Facility by, among other things, (a) extending the maturity date of the credit facility to March 27, 2024, (b) increasing the facility amount to $2.25 billion (with an accordion feature that allows a further increase of the facility amount up to $3.25 billion), (c) eliminating the covenants restricting investments, joint ventures and acquisitions by the Company and its subsidiaries and (d) adjusting the financial covenants to eliminate the net worth covenant upon the removal of the same covenant from the Company’s existing Note Purchase Agreement (defined below). We were in compliance with the covenants under the Revolving Credit Facility at September 30, 2022. On December 16, 2020, the Company entered into a first amendment to the Revolving Credit Facility, which provides for, among other things, (a) administrative changes allowing a one-time limited conditionality draw under the Revolving Credit Facility in connection with the March 2, 2021 investment by the Company, indirectly through a subsidiary of the Company, of a majority interest in PA Consulting and (b) an increase in the interest rate applicable margin to 1.625% per annum if the Consolidated Leverage Ratio (as defined in the Revolving Credit Facility) of the Company is equal to or greater than 3.00 to 1.00. The Revolving Credit Facility permits the Company to borrow under two separate tranches in U.S. dollars, certain specified foreign currencies, and any other currency that may be approved in accordance with the terms of the Revolving Credit Facility. The Revolving Credit Facility also provides for a financial letter of credit sub facility of $400.0 million, permits performance letters of credit, and provides for a $50.0 million sub facility for swing line loans. Letters of credit are subject to fees based on the Company’s Consolidated Leverage Ratio. The Company pays a facility fee of between 0.08% and 0.23% per annum depending on the Company’s Consolidated Leverage Ratio. On March 25, 2020, the Company entered into an unsecured term loan facility (the “2020 Term Loan Facility”) with a syndicate of financial institutions as lenders. Under the 2020 Term Loan Facility, the Company borrowed an aggregate principal amount of $730.0 million and one of the Company's U.K. subsidiaries borrowed an aggregate principal amount of £250.0 million. The proceeds of the term loans were used to repay the Bilateral Term Loan and for general corporate purposes. The 2020 Term Loan Facility contains affirmative and negative covenants and events of default customary for financings of this type that are consistent with those included in the Revolving Credit Facility. During fiscal 2020, the Company entered into interest rate and cross currency derivative contracts to swap a portion of our variable rate debt to fixed rate debt. See Note 18- Commitments and Contingencies and Derivative Financial Instruments for discussion regarding the Company's derivative instruments. During fiscal 2022 we entered into two treasury locks to manage our interest rate exposure with the anticipated issuance of fixed rate debt before December 2023. During fiscal 2020, the Company entered into interest rate and cross currency derivative contracts to swap a portion of our variable rate debt to fixed rate debt. See Note 18- Commitments and Contingencies and Derivative Financial Instruments for discussion regarding the Company's derivative instruments. On January 20, 2021, the Company entered into an unsecured delayed draw term loan facility (the “2021 Term Loan Facility”) with a syndicate of financial institutions as lenders. Under the 2021 Term Loan Facility, the Company borrowed an aggregate principal amount of $200.0 million and £650.0 million. The proceeds of the term loans were used primarily to fund the Company's investment in PA Consulting. The 2021 Term Loan Facility contains affirmative and negative covenants and events of default customary for financings of this type that are consistent with those included in the Revolving Credit Facility and the 2020 Term Loan Facility. The 2020 Term Loan Facility and the 2021 Term Loan Facility are together referred to as the "Term Loan Facilities". We were in compliance with the covenants under the Term Loan Facilities at September 30, 2022. On March 12, 2018, the Company entered into a note purchase agreement (as amended, the "Note Purchase Agreement") with respect to the issuance and sale in a private placement transaction of $500.0 million in the aggregate principal amount of the Company’s senior notes in three series (collectively, the “Senior Notes”). The Note Purchase Agreement provides that if the Company's consolidated leverage ratio exceeds a certain amount, the interest on the Senior Notes may increase by 75 basis points. The Senior Notes may be prepaid at any time subject to a make-whole premium. The sale of the Senior Notes closed on May 15, 2018. The Company used the net proceeds from the offering of Senior Notes to repay certain existing indebtedness and for other general corporate purposes. The Note Purchase Agreement contains affirmative, negative and financial covenants customary for financings of this type, including, among other things, covenants to maintain a minimum consolidated net worth and maximum consolidated leverage ratio and limitations on certain liens, mergers, dispositions and transactions with affiliates. In addition, the Note Purchase Agreement contains customary events of default. We were in compliance with the covenants under the Note Purchase Agreement at September 30, 2022. We believe the carrying value of the Revolving Credit Facility, the Term Loan Facilities and other debt approximates fair value based on the interest rates and scheduled maturities applicable to the outstanding borrowings. The fair value of the Senior Notes is estimated to be $498.3 million at September 30, 2022, based on Level 2 inputs. The fair value is determined by discounting future cash flows using interest rates available for issuances with similar terms and average maturities. The Company has issued $1.3 million in letters of credit under the Revolving Credit Facility, leaving $1.14 billion of available borrowing capacity under the Revolving Credit Facility at September 30, 2022. In addition, the Company had issued $279.2 million under separate, committed and uncommitted letter-of-credit facilities for total issued letters of credit of $280.5 million at September 30, 2022. The following table presents the amount of interest paid by the Company during September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 $88,031 $54,860 $58,257

Leases

Leases	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	Leases The components of lease expense (reflected in selling, general and administrative expenses) for th e years ended September 30, 2022, October 1, 2021 and October 2, 2020 were as follows (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Lease cost Operating lease cost $ 151,134 $ 160,026 $ 169,967 Variable lease cost 36,631 31,727 35,083 Sublease income (15,207) (12,359) (14,719) Total lease cost $ 172,558 $ 179,394 $ 190,331 Supplemental information related to the Company's leases for the years ended September 30, 2022 and October 1, 2021 was as follows (in thousands): September 30, 2022 October 1, 2021 Cash paid for amounts included in the measurements of lease liabilities $ 229,275 $ 209,594 Right-of-use assets obtained in exchange for new operating lease liabilities $ 38,110 $ 165,770 Weighted average remaining lease term - operating leases 6.3 years 7 years Weighted average discount rate - operating leases 2.8% 2.6% Total remaining lease payments under the Company's leases for each of the succeeding years is as follows (in thousands): Fiscal Year Operating Leases 2023 $ 168,347 2024 149,492 2025 125,494 2026 106,247 2027 86,639 Thereafter 196,628 832,847 Less Interest (75,229) $ 757,618 Right-of-Use and Other Long-Lived Asset Impairment During fiscal 2022 and fiscal 2020, as a result of the Company's transformation initiatives, including the changing nature of the Company's use of office space for its workforce, the Company evaluated its existing real estate lease portfolio. These initiatives resulted in the abandonment of certain leased office spaces and the establishment of a formal plan to sublease certain other leased spaces that will no longer be utilized by the Company. In connection with the Company’s actions related to these initiatives, the Company evaluated certain of its lease right-of-use assets and related property, equipment and leasehold improvements for impairment under ASC 360. As a result of the analysis, the Company recognized impairment losses of $78.3 million and $162 million for the fiscal years ended September 30, 2022 and October 2, 2020, respectively, which are included in selling, general and administrative expenses in the accompanying statements of earnings. The impairment losses recorded include $60.7 million and $127.0 million related to right-of-use lease assets and $17.7 million and $35.0 million related to other long-lived assets, including property, equipment & improvements and leasehold improvements for the fiscal years ended September 30, 2022 and October 2, 2020, respectively.
Leases	Leases The components of lease expense (reflected in selling, general and administrative expenses) for th e years ended September 30, 2022, October 1, 2021 and October 2, 2020 were as follows (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Lease cost Operating lease cost $ 151,134 $ 160,026 $ 169,967 Variable lease cost 36,631 31,727 35,083 Sublease income (15,207) (12,359) (14,719) Total lease cost $ 172,558 $ 179,394 $ 190,331 Supplemental information related to the Company's leases for the years ended September 30, 2022 and October 1, 2021 was as follows (in thousands): September 30, 2022 October 1, 2021 Cash paid for amounts included in the measurements of lease liabilities $ 229,275 $ 209,594 Right-of-use assets obtained in exchange for new operating lease liabilities $ 38,110 $ 165,770 Weighted average remaining lease term - operating leases 6.3 years 7 years Weighted average discount rate - operating leases 2.8% 2.6% Total remaining lease payments under the Company's leases for each of the succeeding years is as follows (in thousands): Fiscal Year Operating Leases 2023 $ 168,347 2024 149,492 2025 125,494 2026 106,247 2027 86,639 Thereafter 196,628 832,847 Less Interest (75,229) $ 757,618 Right-of-Use and Other Long-Lived Asset Impairment During fiscal 2022 and fiscal 2020, as a result of the Company's transformation initiatives, including the changing nature of the Company's use of office space for its workforce, the Company evaluated its existing real estate lease portfolio. These initiatives resulted in the abandonment of certain leased office spaces and the establishment of a formal plan to sublease certain other leased spaces that will no longer be utilized by the Company. In connection with the Company’s actions related to these initiatives, the Company evaluated certain of its lease right-of-use assets and related property, equipment and leasehold improvements for impairment under ASC 360. As a result of the analysis, the Company recognized impairment losses of $78.3 million and $162 million for the fiscal years ended September 30, 2022 and October 2, 2020, respectively, which are included in selling, general and administrative expenses in the accompanying statements of earnings. The impairment losses recorded include $60.7 million and $127.0 million related to right-of-use lease assets and $17.7 million and $35.0 million related to other long-lived assets, including property, equipment & improvements and leasehold improvements for the fiscal years ended September 30, 2022 and October 2, 2020, respectively.

Employee Stock Purchase and Sto

Employee Stock Purchase and Stock Incentive Plans	12 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Employee Stock Purchase and Stock Incentive Plans	Employee Stock Purchase and Stock Incentive Plans Employee Stock Purchase Plans Under the Company's stock purchase plans, eligible employees who elect to participate in these plans are granted the right to purchase shares of the common stock of Jacobs at a discount that is limited to 5% of the per-share market value on the day shares are sold to employees. The following table summarizes the stock issuance activity under the plans for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Aggregate Purchase Price Paid for Shares Sold (in thousands): $ 38,648 $ 32,149 $ 27,813 Aggregate Number of Shares Sold: 302,429 287,587 333,078 At September 30, 2022, there rema ins 2,875,448 sh ares reserved for issuance under the Company's stock purchase plans. Stock Incentive Plans We also sponsor the 1999 Stock Incentive Plan, as amended and restated (the "SIP") and the 1999 Outside Director Stock Plan, as amended and restated (the "ODSP"). The 1999 SIP provides for the issuance of incentive stock options, non-qualified stock options, share appreciation rights ("SARs"), restricted stock and restricted stock units to employees. The 1999 ODSP provides for awards of shares of common stock, restricted stock, restricted stock units and grants of non-qualified stock options to our outside (i.e., nonemployee) directors. The following table sets forth certain information about the 1999 Plans: 1999 SIP 1999 ODSP Total Number of shares authorized 29,850,000 1,100,000 30,950,000 Number of remaining shares reserved for issuance at September 30, 2022 4,244,964 242,212 4,487,176 Number of shares relating to outstanding stock options at September 30, 2022 358,224 81,125 439,349 Number of shares available for future awards: At September 30, 2022 3,886,740 161,087 4,047,827 At October 1, 2021 4,166,975 187,554 4,354,529 Effective September 28, 2012, all grants of shares under the 1999 SIP are issued on a fungible basis. An award other than an option or SAR is granted on a 1.92-to-1.00 basis (“Fungible”). An award of an option or SAR is granted on a 1-to-1 basis (“Not Fungible”). The following table presents the fair value of shares (of restricted stock and restricted stock units) vested for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted Stock and Restricted Stock Units (service condition) $ 23,077 $ 20,374 $ 29,209 Restricted Stock Units (service, market, and performance conditions at target) 22,678 26,495 20,998 Total $ 45,755 $ 46,869 $ 50,207 At September 30, 2022, the amount of compensation cost relating to non-vested awards not yet recognized in the financial statements is approximately $81.9 million. The majority of these unrecognized compensation costs will be recognized by the first quarter of fiscal 2024. The weighted average remaining contractual term of options currently exercisable is 2.2 years. Stock Options The following table summarizes the stock option activity for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: Number of Stock Options Weighted Average Outstanding at September 27, 2019 926,606 $ 45.48 Exercised (212,467) $ 44.05 Cancelled or expired (7,650) $ 45.31 Outstanding at October 2, 2020 706,489 $ 45.91 Exercised (130,030) $ 47.07 Cancelled or expired (2,475) $ 45.18 Outstanding at October 1, 2021 573,984 $ 45.65 Granted (1) 150,951 $ 12.79 Exercised (284,502) $ 43.56 Cancelled or expired (1,084) $ 21.34 Outstanding at September 30, 2022 439,349 $ 35.77 (1) Included in the September 30, 2022 amounts are options issued related to a recent business combination with strike prices lower than the then-current share price in order to derive a certain value. Cash received from the exercise of stock options, net of tax remitted, during the year ended September 30, 2022 was $12.4 million . Stock options outstanding at September 30, 2022 consisted entirely of non-qualified stock options. The following table presents the total intrinsic value of stock options exercised for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 $28,149 $9,693 $9,986 The total intrinsic value of stock options exercisable at September 30, 2022 was approximately $25.2 million. The following table presents certain other information regarding our 1999 SIP and 1999 OSDP for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020: September 30, 2022 October 1, 2021 October 2, 2020 At fiscal year end: Range of exercise prices for options exercisable (1) $5.64–$60.43 $37.03–$60.43 $32.51–$60.43 Number of options exercisable 367,624 573,984 706,489 For the fiscal year: Range of prices relating to options exercised $11.27–$60.43 $32.51-$60.43 $37.03-$60.08 (1) Included in the September 30, 2022 amounts are options issued related to a recent business combination with strike prices lower than the then-current share price in order to derive a certain value. The following table presents certain information regarding stock options outstanding and stock options exercisable at September 30, 2022: September 30, 2022 Options Outstanding and Exercisable Range of Exercise Prices Number Weighted Average Remaining Contractual Life (years) Weighted Average Price $32.51 - $37.03 149,328 7.60 $ 12.79 $37.43 - $46.09 178,009 2.82 $ 43.01 $47.11 - $55.13 90,137 0.96 $ 53.53 $60.08 - $80.63 21,875 1.42 $ 60.43 439,349 3.99 $ 35.77 The 1999 ODSP and the 1999 SIP allow participants to satisfy the exercise price of stock options by tendering shares of Jacobs common stock that have been owned by the participants for at least six months. Shares so tendered are retired and canceled, and are shown as repurchases of common stock in the accompanying Consolidated Statements of Stockholders’ Equity. The weighted average remaining contractual term of options currently exercisable i s 3.1 years . Restricted Stock The following table presents the number of shares of restricted stock and restricted stock units issued as common stock under the 1999 SIP for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted stock 818 — — Restricted stock units (service condition) 290,582 380,722 351,670 Restricted stock units (service and performance conditions) 176,470 181,132 202,792 The amount of restricted stock units issued for awards with performance conditions in the above table are issued based on performance against the target amount. The number of shares ultimately issued, which could be greater or less than target, will be based on achieving specific performance conditions related to the awards as well as achieving the service condition required for the restricted stock units to vest. The following table presents the number and weighted average grant-date fair value of restricted stock and restricted stock units at September 30, 2022: Number of Shares Weighted Average Grant-Date Fair Value Outstanding at October 1, 2021 1,444,231 $ 91.23 Granted 623,323 $ 127.35 Vested (602,793) $ 80.95 Canceled (89,332) $ 113.89 Outstanding at September 30, 2022 1,375,429 $ 110.64 The following table presents the number of shares of restricted stock and restricted stock units canceled and withheld for taxes under the 1999 SIP for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted stock — — 34,417 Restricted stock units (service condition) 57,366 201,967 183,099 Restricted stock units (service and performance conditions) 31,966 218,520 160,781 The amount of unvested restricted stock units canceled for awards with service and performance conditions in the above table is based on the service period achieved and performance against the target amount. The restrictions attached to restricted stock and restricted stock units generally relate to the recipient’s ability to sell or otherwise transfer the stock or stock units. There are also restrictions that subject the stock and stock units to forfeiture back to the Company until earned by the recipient through continued employment or service. The following table provides the number of restricted stock units outstanding at September 30, 2022 under the 1999 SIP. September 30, 2022 Restricted stock 252 Restricted stock units (service condition) 732,945 Restricted stock units (service and performance conditions) 585,099 The following table presents the number of shares of restricted stock and restricted stock units issued under the 1999 ODSP for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted stock units (service condition) 13,785 17,680 18,100 No shares of restricted stock were issued under the 1999 ODSP during such periods. The following table provides the number of shares of restricted stock and restricted stock units outstanding at September 30, 2022 under the 1999 ODSP: September 30, 2022 Restricted stock — Restricted stock units (service condition) 57,133

Savings and Deferred Compensati

Savings and Deferred Compensation Plans	12 Months Ended
	Sep. 30, 2022
Savings And Deferred Compensation Plans [Abstract]
Savings and Deferred Compensation Plans	Savings and Deferred Compensation Plans Savings Plans We sponsor various defined contribution savings plans which allow participants to make voluntary contributions by salary deduction. Such plans cover substantially all of our domestic, nonunion employees in the U.S. and are qualified under Section 401(k) of the U.S. Internal Revenue Code. Similar plans outside the U.S. cover various groups of employees of our international subsidiaries and affiliates. Several of these plans allow the Company to match, on a voluntary basis, a portion of the employee contributions. The following table presents the Company’s contributions to these savings plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 $ 184,399 $ 132,865 $ 91,833 Deferred Compensation Plans Our non-qualified deferred compensation programs provide benefits payable to directors, officers, and certain key employees or their designated beneficiaries at specified future dates, upon retirement, or death. The plans are unfunded; therefore, benefits are paid from the general assets of the Company. Participants' cash deferrals earn a return based on the participants' selection of investments in several hypothetical investment options. Participants are also able to defer stock based compensation in the plans, which must remain invested in Company stock and are distributed in shares of Jacobs common stock. Since no investment diversification is permitted, changes in the fair value of Jacobs' common stock are not recognized. For the deferred compensation held in company stock, the number of shares needed to settle the liability is included in the denominator in both the basic and diluted earnings per share calculations. The following table presents the amount charged to expense for the Company’s deferred compensation plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 $ 1,697 $ 2,900 $ 203 The following table presents the amount relating to assets held as deferred compensation arrangement investments for the years ended September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Deferred compensation arrangement investments $ 165,118 $ 210,223

Pension and Other Postretiremen

Pension and Other Postretirement Benefit Plans	12 Months Ended
	Sep. 30, 2022
Retirement Benefits [Abstract]
Pension and Other Postretirement Benefit Plans	Pension and Other Postretirement Benefit Plans Company-Only Sponsored Plans We sponsor various defined benefit pension and other post retirement plans covering employees of certain U.S. and international subsidiaries. The pension plans provide pension benefits that are based on the employee’s compensation and years of service. Our funding policy varies by country and plan according to applicable local funding requirements and plan-specific funding agreements. The accounting for pension and other post-retirement benefit plans requires the use of assumptions and estimates in order to calculate periodic benefit cost and the value of the plans’ assets and benefit obligations. These assumptions include discount rates, investment returns, and projected salary increases, among others. The discount rates used in valuing the plans' benefit obligations were determined with reference to high quality corporate and government bonds that are appropriately matched to the duration of each plan's obligations. The expected long-term rate of return on plan assets is generally based on using country-specific simulation models which select a single outcome for expected return based on the target asset allocation. The expected long-term rates of return used in the valuation are the annual average returns generated by these assumptions over a 20-year period for each asset class based on the expected long-term rate of return of the underlying assets. The following table sets forth the changes in the plans’ combined net benefit obligation (segregated between plans existing within and outside the U.S.) for the years ended September 30, 2022 and October 1, 2021 (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Net benefit obligation at the beginning of the year $ 404,820 $ 437,920 $ 2,375,640 $ 2,388,077 Service cost 236 456 6,480 6,568 Interest cost 10,350 10,221 42,328 38,907 Participants’ contributions — — 249 212 Actuarial gains (1) (85,067) (11,808) (651,798) (140,670) Benefits paid (25,565) (25,582) (74,378) (74,477) Curtailments/settlements/plan amendments (5,271) (6,387) (2,641) (13,932) Acquisition of PA Consulting Plans, net of post-deal transfers (2) — — — 66,065 Effect of exchange rate changes and other, net — — (330,414) 104,890 Net benefit obligation at the end of the year $ 299,503 $ 404,820 $ 1,365,466 $ 2,375,640 (1) Actuarial gains primarily driven by change in discount rates. (2) See note below change in assets table. The following table sets forth the changes in the combined Fair Value of the plans’ assets (segregated between plans existing within and outside the U.S.) for the years ended September 30, 2022 and October 1, 2021 (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Fair value of plan assets at the beginning of the year $ 385,521 $ 382,250 $ 2,203,495 $ 2,043,356 Actual (loss) return on plan assets (68,585) 35,152 (557,972) 60,040 Employer contributions 93 88 33,032 39,085 Participants’ contributions — — 249 212 Gross benefits paid (25,565) (25,582) (74,378) (74,477) Curtailments/settlements/plan amendments (5,271) (6,387) (2,641) (13,932) Acquisition of PA Consulting Plans, net of post-deal transfers — — — 60,160 Effect of exchange rate changes and other, net — — (304,160) 89,051 Fair value of plan assets at the end of the year $ 286,193 $ 385,521 $ 1,297,625 $ 2,203,495 On March 2, 2021, the Company made a strategic investment in PA Consulting, and as a result acquired a gross pension plan obligation of $1.025 billion and pension assets of $1.018 billion. In the third quarter of fiscal 2021, PA Consulting transferred the majority of the assets and liabilities of its largest pension plan to an insurance company, approximately $960 million each, effectively settling those related assets and liabilities for no impact to net income. Also during fiscal 2022 and 2021, the Company incurred combined curtailment and settlement losses on our defined benefit plans of approxima tely $0.1 million and $2.8 million, respectively, prima rily related to the Ireland, US and UK plans. The following table reconciles the combined funded statuses of the plans recognized in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Net benefit obligation at the end of the year $ 299,503 $ 404,820 $ 1,365,466 $ 2,375,640 Fair value of plan assets at the end of the year 286,193 385,521 1,297,625 2,203,495 Underfunded amount recognized at the end of the year $ 13,310 $ 19,299 $ 67,841 $ 172,145 The following table presents the accumulated benefit obligation at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Accumulated benefit obligation at the end of the year $ 299,347 $ 404,283 $ 1,355,717 $ 2,305,808 The following table presents the amounts recognized in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Prepaid benefit cost included in noncurrent assets $ — $ — $ 54,897 $ 48,340 Accrued benefit cost included in current liabilities 83 84 4,359 3,873 Accrued benefit cost included in noncurrent liabilities 13,227 19,215 118,379 216,612 Net amount recognized at the end of the year $ 13,310 $ 19,299 $ 67,841 $ 172,145 The following table presents the significant actuarial assumptions used in determining the funded statuses and the following year's benefit cost of the Company’s U.S. plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Discount rates 4.2% to 5.5% 2.3% to 2.8% 2.0% to 2.7% Rates of compensation increases 3.5% 3.5% 3.5% Expected long-term rates of return on assets 5.5% to 6.4% 4.7% to 5.1% 4.6% to 4.7% The following table presents the significant actuarial assumptions used in determining the funded statuses and the following year's benefit cost of the Company’s non-U.S. plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Discount rates 2.4% to 7.4% 0.6% to 6.6% 0.4% to 6.6% Rates of compensation increases 2.5% to 9.0% 2.4% to 7.5% 2.7% to 7.5% Expected long-term rates of return on assets 3.3% to 7.5% 2.0% to 7.0% 1.8% to 7.0% The following table presents certain amounts relating to our U.S. plans recognized in accumulated other comprehensive (gain) loss at September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Arising during the period: Net actuarial loss (gain) $ 578 $ (25,109) $ (900) Prior service cost — — 1,589 Total 578 (25,109) 689 Reclassification adjustments: Net actuarial losses (2,157) (3,204) (2,653) Prior service (benefit) (324) (325) (244) Total (2,481) (3,529) (2,897) Total $ (1,903) $ (28,638) $ (2,208) The following table presents certain amounts relating to our non-U.S. plans recognized in accumulated other comprehensive (gain) loss at September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Arising during the period: Net actuarial (gain) loss $ (78,705) $ (65,547) $ 71,676 Prior service cost — — — Total (78,705) (65,547) 71,676 Reclassification adjustments: Net actuarial losses (5,492) (8,761) (6,322) Prior service (benefit) (1,066) (1,219) (1,169) Total (6,558) (9,980) (7,491) Total $ (85,263) $ (75,527) $ 64,185 The following table presents certain amounts relating to our plans recorded in accumulated other comprehensive loss that have not yet been recognized as components of net periodic benefit cost at September 30, 2022 and October 1, 2021 (segregated between U.S. and non-U.S. plans) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Net actuarial loss $ 37,638 $ 39,217 $ 248,716 $ 328,397 Prior service cost 697 1,021 20,344 25,926 Total $ 38,335 $ 40,238 $ 269,060 $ 354,323 The following table presents the amount of accumulated comprehensive income that will be amortized against earnings as part of our net periodic benefit cost in fiscal 2023 based on 2022 exchange rates (segregated between U.S. and non-U.S. plans) (in thousands): U.S. Plans Non-U.S. Plans Unrecognized net actuarial (gain) or loss $ (1,770) $ 5,310 Unrecognized prior service cost 431 1,246 Accumulated comprehensive (gain) or loss to be recorded against earnings $ (1,339) $ 6,556 We consider various factors in developing the estimates for the expected, long-term rates of return on plan assets. These factors include the projected, long-term rates of returns on the various types of assets in which the plans invest, as well as historical returns. In general, investment allocations are determined by each plan’s trustees and/or investment committees. The objectives of the plans’ investment policies are to (i) maximize returns while preserving capital; (ii) provide returns sufficient to meet the current and long-term obligations of the plan as the obligations become due; and (iii) maintain a diversified portfolio of assets so as to reduce the risk associated with having a disproportionate amount of the plans’ total assets invested in any one type of asset, issuer or geography. None of our pension plans hold Jacobs common stock directly (although some plans may hold shares indirectly through investments in mutual funds). The plans’ weighted average asset allocations at September 30, 2022 and October 1, 2021 (the measurement dates used in valuing the plans’ assets and liabilities) were as follows: U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Equity securities 2 % 3 % 15 % 15 % Debt securities 66 % 58 % 49 % 54 % Real estate investments — % — % 11 % 9 % Other 32 % 39 % 25 % 22 % The following table presents the Fair Value of the Company’s Domestic U.S. plan assets at September 30, 2022, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): September 30, 2022 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Equities $ 6,708 $ — $ — $ — $ 6,708 Domestic bonds 64,396 106,961 — — 171,357 Overseas bonds — 15,200 — — 15,200 Cash and equivalents 19,025 — — — 19,025 Mutual funds 73,903 — — — 73,903 Total $ 164,032 $ 122,161 $ — $ — $ 286,193 The following table presents the Fair Value of the Company’s non-U.S. plan assets at September 30, 2022, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): September 30, 2022 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Domestic equities $ — $ 42,655 $ — $ 1,539 $ 44,194 Overseas equities — 74,056 — 76,813 150,869 Domestic bonds — 38,448 — — 38,448 Overseas bonds — 532,697 — 64,897 597,594 Cash and equivalents 9,667 1,835 — — 11,502 Real estate — 4,076 102,868 36,959 143,903 Insurance contracts — — 80,231 80,231 Hedge funds — — 138,603 11,568 150,171 Mutual funds — 80,713 — — 80,713 Total $ 9,667 $ 774,480 $ 321,702 $ 191,776 $ 1,297,625 The following table presents the Fair Value of the Company’s U.S. plan assets at October 1, 2021, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): October 1, 2021 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Equities $ 12,331 $ — $ — $ — $ 12,331 Domestic bonds 74,456 132,138 — — 206,594 Overseas bonds — 15,730 — — 15,730 Cash and equivalents 22,634 — — — 22,634 Mutual funds 128,232 — — — 128,232 Total $ 237,653 $ 147,868 $ — $ — $ 385,521 The following table presents the Fair Value of the Company’s non-U.S. plan assets at October 1, 2021, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): October 1, 2021 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Domestic equities $ — $ 86,117 $ — $ 2,662 $ 88,779 Overseas equities — 142,243 — 101,071 243,314 Domestic bonds — 48,119 — — 48,119 Overseas bonds — 1,049,585 — 56,616 1,106,201 Cash and equivalents 27,579 1,322 — — 28,901 Real estate — 17,319 116,936 53,434 187,689 Insurance contracts — — 133,802 — 133,802 Hedge funds — — 231,319 16,020 247,339 Mutual funds — 119,351 — — 119,351 Total $ 27,579 $ 1,464,056 $ 482,057 $ 229,803 $ 2,203,495 The following table summarizes the changes in the Fair Value of the Company’s non-U.S. Pension Plans’ Level 3 assets for the years ended September 30, 2022 and October 1, 2021 (in thousands): Real Estate Insurance Contracts Hedge Funds Balance at Balance at October 2, 2020 $ 105,422 $ 67,709 $ 171,730 Purchases, sales, and settlements 6,288 2,413 51,513 Realized and unrealized gains 398 1,448 864 Acquisition of PA Consulting Plans, net of post-deal transfers — 60,160 — Effect of exchange rate changes 4,828 2,072 7,212 Balance at October 1, 2021 $ 116,936 $ 133,802 $ 231,319 Purchases, sales, and settlements (8,686) (6,312) (11,553) Realized and unrealized losses 14,701 (24,770) (42,964) Effect of exchange rate changes (20,083) (22,489) (38,199) Balance at September 30, 2022 $ 102,868 $ 80,231 $ 138,603 The following table presents the amount of cash contributions we anticipate making into the plans during fiscal 2023 (in thousands): U.S. Plans Non-U.S. Plans Anticipated cash contributions $ — $ 26,651 The following table presents the total benefit payments expected to be paid to plan participants during each of the next five fiscal years, and in total for the five years thereafter (in thousands): U.S. Plans Non-U.S. Pans 2023 $ 30,869 $ 62,922 2024 28,884 67,058 2025 28,088 68,129 2026 27,377 72,069 2027 26,139 78,254 For the periods 2028 through 2032 115,872 351,748 The following table presents the components of net periodic benefit cost for the Company’s U.S. plans recognized in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Service cost $ 236 $ 456 $ 409 Interest cost 10,350 10,221 12,673 Expected return on plan assets (16,933) (15,932) (17,670) Actuarial loss 2,861 4,249 3,518 Prior service cost 430 431 323 Net pension cost, before special items $ (3,056) $ (575) $ (747) Curtailment expense/Settlement (gain) loss (206) (64) 3,436 Total net periodic pension (income) cost recognized $ (3,262) $ (639) $ 2,689 The following table presents the components of net periodic benefit cost for the Company’s Non-U.S. plans recognized in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Service cost $ 6,480 $ 6,568 $ 5,710 Interest cost 42,328 38,907 39,469 Expected return on plan assets (71,875) (90,346) (93,407) Actuarial loss 7,147 10,834 7,578 Prior service cost 1,421 1,519 1,405 Net pension cost, before special items $ (14,499) $ (32,518) $ (39,245) Curtailment expense/Settlement loss 329 2,847 1,341 Total net periodic pension (income) cost recognized $ (14,170) $ (29,671) $ (37,904) The service cost component of net periodic pension income is presented in direct cost of contracts and selling, general and administrative expenses while all other components are presented in miscellaneous income (expense), net on the Consolidated Statements of Earnings for the years presented above. Multiemployer Plans In the U.S. and various other countries, we contribute to trusteed pension plans covering hourly and certain salaried employees under industry-wide agreements. Contributions are based on the hours worked by employees covered under these agreements and are charged to direct costs of contracts on a current basis. With respect to these multiemployer plans, the Company's liability to fund these plans is generally limited to the contributions we are required to make under collective bargaining agreements. Based on our review of our multiemployer pension plans under the guidance provided in ASU 2011-09— Compensation-Retirement Benefits-Multiemployer Plans , we have concluded that none of the multiemployer pension plans into which we contribute are individually significant to our Consolidated Financial Statements. The following table presents the Company’s contributions to these multiemployer plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Europe $ 1,548 $ 1,713 $ 1,922 United States 11,038 11,316 6,637 Contributions to multiemployer pension plans $ 12,586 $ 13,029 $ 8,559

PA Consulting Business Combinat

PA Consulting Business Combinations	12 Months Ended
	Sep. 30, 2022
Business Acquisition [Line Items]
PA Consulting Business Combinations	Other Business Combinations StreetLight Data, Inc. On February 4, 2022, the Company acquired StreetLight Data, Inc. ("StreetLight"). StreetLight is a pioneer of mobility analytics who uses its data and machine learning resources to shed light on mobility and enable users to solve complex transportation problems. The Company paid total base consideration of approximately $190.8 million in cash and issued $0.9 million in equity and $5.2 million in in-the-money stock options to the former owners of StreetLight. The Company also paid off StreetLight's debt of approximately $1.0 million simultaneously with the consummation of the acquisition. The following summarizes the fair values of StreetLight's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 7.3 Receivables 5.2 Property, equipment and improvements, net 0.1 Goodwill 116.5 Identifiable intangible assets 105.1 Prepaid expenses and other current assets 2.0 Total Assets $ 236.2 Liabilities Accounts payable, accrued expenses and other current liabilities $ 23.1 Other long term liabilities 16.2 Total Liabilities 39.3 Net assets acquired $ 196.9 The purchase price allocation is based upon preliminary information and is subject to change when additional information is obtained. Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has not completed its final assessment of the fair values of StreetLight's assets acquired and liabilities assumed. The final purchase price allocation could result in adjustments to certain assets and liabilities, including the residual amount allocated to goodwill. Since the initial preliminary estimates reported in the second quarter of fiscal 2022, the Company has updated certain amounts reflected in the preliminary purchase price allocation, as summarized in the fair values of StreetLight's assets acquired and liabilities assumed as of the acquisition date set forth above, the majority of which related to reclassifications between goodwill and intangibles and for deferred taxes. Identifiable intangibles are technology, data and customer relationships, contracts and backlog and have estimated lives of 5, 4 and 9 years, respectively. No summarized unaudited pro forma results are provided for the StreetLight acquisition due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations. BlackLynx On November 19, 2021, Jacobs acquired BlackLynx, a provider of high-performance software, to complement Jacobs' portfolio of cyber, intelligence and digital solutions. The Company paid total base consideration of approximately $235.4 million in cash to the former owners of BlackLynx. In conjunction with the acquisition, the Company also paid off BlackLynx's debt of approximately $5.3 million simultaneously with the consummation of the acquisition. The following summarizes the fair values of BlackLynx's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 5.1 Receivables 7.7 Property, equipment and improvements, net 0.8 Goodwill 195.8 Identifiable intangible assets 51.1 Prepaid expenses and other current assets 3.2 Total Assets $ 263.7 Liabilities Accounts payable, accrued expenses and other current liabilities $ 19.5 Other long term liabilities 8.8 Total Liabilities 28.3 Net assets acquired $ 235.4 Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has completed its final assessment of the fair values of BlackLynx's assets acquired and liabilities assumed. Since the initial preliminary estimates reported in the first quarter of fiscal 2021, the Company has updated certain amounts reflected in the preliminary purchase price allocation, as summarized in the fair values of BlackLynx's assets acquired and liabilities assumed as of the acquisition date set forth above, the majority of which related to reclassifications between goodwill and intangibles and for deferred taxes. Identifiable intangibles are technology and customer relationships, contracts and backlog and have estimated lives of 8 years and 4 years, respectively. No summarized unaudited pro forma results are provided for the BlackLynx acquisition due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations. Buffalo Group On November 24, 2020, a subsidiary of Jacobs completed the acquisition of Buffalo Group, a leader in advanced cyber and intelligence solutions which allows Jacobs to further expand its cyber and intelligence solutions offerings to government clients. The Company paid total consideration o f $190.1 million, which was comprised of approximately $182.4 million in cash to the former owners of Buffalo Group and contingent consideration of $7.7 million. The contingent consideration was subsequently recognized in fiscal 2021 as an offset to selling, general and administrative expense when it was determined no amounts would be paid. In conjunction with the acquisition, the Company assumed the Buffalo Group's debt of approximately $7.7 million. The Company repaid all of the assumed Buffalo Group debt by the end of the first fiscal quarter of 2021. The following summarizes the fair values of The Buffalo Group's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 8.4 Receivables 19.2 Property, equipment and improvements, net 2.3 Goodwill 130.7 Identifiable intangible assets 74.0 Prepaid expenses and other current assets 6.2 Total Assets $ 240.8 Liabilities Accounts payable, accrued expenses and other current liabilities $ 46.9 Other long term liabilities 3.8 Total Liabilities 50.7 Net assets acquired $ 190.1 Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. All of the goodwill recognized is expected to be deductible for tax purposes, given the acquisition was structured as an asset acquisition for tax purposes. The Company has completed its final assessment of the fair values of Buffalo Group's assets acquired and liabilities assumed. Since the initial preliminary estimates reported in the first quarter of fiscal 2021, the Company has updated certain amounts reflected in the final purchase price allocation, as summarized in the fair values of Buffalo Group's assets acquired and liabilities assumed as of the acquisition date set forth above. Identifiable intangibles are customer relationships, contracts and backlog and have estimated lives of 9 years. No summarized unaudited pro forma results are provided for the Buffalo Group due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations. John Wood Group's Nuclear Business On March 6, 2020, a subsidiary of Jacobs completed the acquisition of the nuclear consulting, remediation and program management business of John Wood Group, a U.K.-based energy services company, for an enterprise value of £246 million, or approximately $317.9 million, less cash acquired of $24.3 million, as updated for additional working capital adjustments. The John Wood Group nuclear business allows Jacobs to further expand its lifecycle nuclear services business. The following summarizes the fair values of John Wood Group's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 24.3 Receivables 74.2 Other current assets 3.8 Property, equipment and improvements, net 8.3 Goodwill 207.8 Identifiable intangible assets 80.0 Miscellaneous 19.4 Total Assets $ 417.8 Liabilities Accounts payable, accrued expenses and other current liabilities $ 71.4 Long term liabilities 28.5 Total Liabilities 99.9 Net assets acquired $ 317.9 Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has completed its final assessment of the fair values of John Wood Group's assets acquired and liabilities assumed. Since the initial preliminary estimates reported in the second quarter of fiscal 2020, the Company has updated certain amounts reflected in the final purchase price allocation, as summarized in the fair values of John Wood Group's nuclear business assets acquired and liabilities assumed as of the acquisition date set forth above. Identified intangibles include customer relationships, contracts and backlog and developed technology. The customer relationships, contracts and backlog intangible represents the fair value of existing contracts, underlying customer relationships and backlog. The customer relationships, contracts and backlog intangible and the developed technology intangible have lives of 12 and 15 years , respectively. No summarized unaudited pro forma results are provided for the John Wood Group nuclear business due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations.
PA Consulting Group Limited
Business Acquisition [Line Items]
PA Consulting Business Combinations	PA Consulting Business Combination Deal Summary, Opening Balance Sheet and Pro Forma Financial Information On March 2, 2021, Jacobs completed the strategic investment of a 65% interest in PA Consulting, a UK-based leading innovation and transformation consulting firm. The total consideration paid by the Company was $1.7 billion, funded through cash on hand, proceeds from a new term loan and draws on the Company's existing Revolving Credit Facility. Further, in connection with the transaction, an additional $261 million in investment proceeds had not yet been distributed at the investment date due to continuing employment requirements of associated management owners. Consequently, this amount represented compensation expense incurred related to the investment that was expensed subsequent to the date of the transaction, and was reflected in selling, general and administrative expense and cash from operations for the fiscal year ended October 1, 2021. The remaining 35% interest was acquired by PA Consulting employees, whose redeemable noncontrolling interests had a fair value of $582.4 million on the closing date, including subsequent purchase accounting adjustments. PA Consulting is accounted for as a consolidated subsidiary and as a separate operating segment. See Note 9 - Borrowings for more discussion on the financing for the transaction. The following summarizes the fair values of PA Consulting's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 134.9 Receivables 166.5 Property, equipment and improvements, net 40.5 Goodwill 1,454.0 Identifiable intangible assets 1,004.2 Prepaid expenses and other current assets 9.5 Miscellaneous long term assets 84.0 Total Assets $ 2,893.6 Liabilities Accounts payable $ 6.5 Accrued liabilities and other current liabilities 354.8 Other long term liabilities 248.0 Total Liabilities 609.3 Redeemable Noncontrolling interests 582.4 Net assets acquired $ 1,701.9 Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future economic benefits. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has completed its final assessment of the fair values of PA Consulting's assets acquired and liabilities assumed. Since the initial preliminary estimates reported in the second quarter of fiscal 2021, the Company has updated certain provisional amounts reflected in the final purchase price allocation, as summarized in the estimated fair values of PA Consulting assets acquired and liabilities assumed above. See below for further discussion on updates to redeemable noncontrolling interests. Identifiable intangibles are customer relationships, contracts and backlog and trade name and have estimated lives ranging from 9 to 20 years (weighted average life of approximately 12 years). The following presents summarized unaudited pro forma operating results of Jacobs from continuing operations assuming that the Company had the PA Consulting investment at September 28, 2019. These pro forma operating results are presented for illustrative purposes only and are not indicative of the operating results that would have been achieved had the related events occurred (in millions, except per share data): For the Years Ended October 1, 2021 October 2, 2020 Revenues $ 14,504.3 $ 14,348.1 Net earnings of the Group $ 695.1 $ 83.5 Net earnings attributable to Jacobs $ 548.0 $ 138.6 Net earnings attributable to Jacobs per share: Basic earnings per share $ 4.21 $ 0.62 Diluted earnings per share $ 4.17 $ 0.61 Included in the table above are charges relating to transaction expenses, a nonrecurring compensation charge and other items that are removed from the years ended October 1, 2021 and are reflected in the prior fiscal year due to the assumed timing of the transaction. Also, income tax expense for the fiscal year p ro forma periods ended October 1, 2021 and October 2, 2020 wa s $330.7 million and $13.5 million, respectively. Redeemable Noncontrolling Interests In connection with the PA Consulting investment, the Company recorded redeemable noncontrolling interests, including subsequent purchase accounting adjustments, representing the noncontrolling interest holders' equity interests in the form of preferred and common shares of PA Consulting, with substantially all of the value associated with these interests allocable to the preferred shares. During fiscal 2022, the Company repurchased certain shares of the redeemable noncontrolling interest holders for $46.1 million in cash and issued certain shares of redeemable noncontrolling interest holders for $49.7 million. The difference between the cash purchase prices and the recorded book values of these repurchased and issued interests was recorded in the Company’s consolidated retained earnings. During fiscal 2021, updates to the Company’s preliminary opening balance sheet fair value estimates of the noncontrolling interests resulted in an offsetting decrease and increase in fair value of the preference share and common share components of the interests by $57.3 million, respectively, with the corresponding redemption value adjustment associated with the preference share portion decreasing consolidated retained earnings and earnings per share by $0.44. See Note 4- Earnings Per Share and Certain Related Information . The results of these adjustments had no impact on the Company’s overall results of operations, financial position, or cash flows. Changes in the Company's redeemable noncontrolling interests d uring the fiscal year ended September 30, 2022 are as follows (in thousands): Total Balance at October 1, 2021 $ 657,722 Accrued Preferred Dividend to Preference Shareholders 67,598 Attribution of Preferred Dividend to Common Shareholders (67,598) Net earnings attributable to redeemable noncontrolling interest to Common Shareholders 34,585 Redeemable Noncontrolling interests redemption value adjustment 27,657 Repurchase of redeemable noncontrolling interests (53,834) Issuance of redeemable noncontrolling interests 54,884 Cumulative translation adjustment and other (88,492) Balance at September 30, 2022 $ 632,522 In addition, certain employees and nonemployees of PA Consulting are eligible to receive equity-based incentive compensation under the terms of the applicable agreements. During the years ended September 30, 2022 and October 1, 2021, the Company recorded approximately $3.3 million and $0.4 million, respectively, in expense associated with these agreements which is reflected in selling, general and administrative expense in the consolidated statements of earnings. Restricted Cash The Company through its investment in PA Consulting held $13.7 million in cash that is restricted from general use and is included in prepaid expenses and other current assets on the Consolidated Balance Sheet.

Other Business Combinations

Other Business Combinations	12 Months Ended
	Sep. 30, 2022
Business Combinations [Abstract]
Other Business Combinations	Other Business Combinations StreetLight Data, Inc. On February 4, 2022, the Company acquired StreetLight Data, Inc. ("StreetLight"). StreetLight is a pioneer of mobility analytics who uses its data and machine learning resources to shed light on mobility and enable users to solve complex transportation problems. The Company paid total base consideration of approximately $190.8 million in cash and issued $0.9 million in equity and $5.2 million in in-the-money stock options to the former owners of StreetLight. The Company also paid off StreetLight's debt of approximately $1.0 million simultaneously with the consummation of the acquisition. The following summarizes the fair values of StreetLight's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 7.3 Receivables 5.2 Property, equipment and improvements, net 0.1 Goodwill 116.5 Identifiable intangible assets 105.1 Prepaid expenses and other current assets 2.0 Total Assets $ 236.2 Liabilities Accounts payable, accrued expenses and other current liabilities $ 23.1 Other long term liabilities 16.2 Total Liabilities 39.3 Net assets acquired $ 196.9 The purchase price allocation is based upon preliminary information and is subject to change when additional information is obtained. Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has not completed its final assessment of the fair values of StreetLight's assets acquired and liabilities assumed. The final purchase price allocation could result in adjustments to certain assets and liabilities, including the residual amount allocated to goodwill. Since the initial preliminary estimates reported in the second quarter of fiscal 2022, the Company has updated certain amounts reflected in the preliminary purchase price allocation, as summarized in the fair values of StreetLight's assets acquired and liabilities assumed as of the acquisition date set forth above, the majority of which related to reclassifications between goodwill and intangibles and for deferred taxes. Identifiable intangibles are technology, data and customer relationships, contracts and backlog and have estimated lives of 5, 4 and 9 years, respectively. No summarized unaudited pro forma results are provided for the StreetLight acquisition due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations. BlackLynx On November 19, 2021, Jacobs acquired BlackLynx, a provider of high-performance software, to complement Jacobs' portfolio of cyber, intelligence and digital solutions. The Company paid total base consideration of approximately $235.4 million in cash to the former owners of BlackLynx. In conjunction with the acquisition, the Company also paid off BlackLynx's debt of approximately $5.3 million simultaneously with the consummation of the acquisition. The following summarizes the fair values of BlackLynx's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 5.1 Receivables 7.7 Property, equipment and improvements, net 0.8 Goodwill 195.8 Identifiable intangible assets 51.1 Prepaid expenses and other current assets 3.2 Total Assets $ 263.7 Liabilities Accounts payable, accrued expenses and other current liabilities $ 19.5 Other long term liabilities 8.8 Total Liabilities 28.3 Net assets acquired $ 235.4 Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has completed its final assessment of the fair values of BlackLynx's assets acquired and liabilities assumed. Since the initial preliminary estimates reported in the first quarter of fiscal 2021, the Company has updated certain amounts reflected in the preliminary purchase price allocation, as summarized in the fair values of BlackLynx's assets acquired and liabilities assumed as of the acquisition date set forth above, the majority of which related to reclassifications between goodwill and intangibles and for deferred taxes. Identifiable intangibles are technology and customer relationships, contracts and backlog and have estimated lives of 8 years and 4 years, respectively. No summarized unaudited pro forma results are provided for the BlackLynx acquisition due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations. Buffalo Group On November 24, 2020, a subsidiary of Jacobs completed the acquisition of Buffalo Group, a leader in advanced cyber and intelligence solutions which allows Jacobs to further expand its cyber and intelligence solutions offerings to government clients. The Company paid total consideration o f $190.1 million, which was comprised of approximately $182.4 million in cash to the former owners of Buffalo Group and contingent consideration of $7.7 million. The contingent consideration was subsequently recognized in fiscal 2021 as an offset to selling, general and administrative expense when it was determined no amounts would be paid. In conjunction with the acquisition, the Company assumed the Buffalo Group's debt of approximately $7.7 million. The Company repaid all of the assumed Buffalo Group debt by the end of the first fiscal quarter of 2021. The following summarizes the fair values of The Buffalo Group's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 8.4 Receivables 19.2 Property, equipment and improvements, net 2.3 Goodwill 130.7 Identifiable intangible assets 74.0 Prepaid expenses and other current assets 6.2 Total Assets $ 240.8 Liabilities Accounts payable, accrued expenses and other current liabilities $ 46.9 Other long term liabilities 3.8 Total Liabilities 50.7 Net assets acquired $ 190.1 Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. All of the goodwill recognized is expected to be deductible for tax purposes, given the acquisition was structured as an asset acquisition for tax purposes. The Company has completed its final assessment of the fair values of Buffalo Group's assets acquired and liabilities assumed. Since the initial preliminary estimates reported in the first quarter of fiscal 2021, the Company has updated certain amounts reflected in the final purchase price allocation, as summarized in the fair values of Buffalo Group's assets acquired and liabilities assumed as of the acquisition date set forth above. Identifiable intangibles are customer relationships, contracts and backlog and have estimated lives of 9 years. No summarized unaudited pro forma results are provided for the Buffalo Group due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations. John Wood Group's Nuclear Business On March 6, 2020, a subsidiary of Jacobs completed the acquisition of the nuclear consulting, remediation and program management business of John Wood Group, a U.K.-based energy services company, for an enterprise value of £246 million, or approximately $317.9 million, less cash acquired of $24.3 million, as updated for additional working capital adjustments. The John Wood Group nuclear business allows Jacobs to further expand its lifecycle nuclear services business. The following summarizes the fair values of John Wood Group's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 24.3 Receivables 74.2 Other current assets 3.8 Property, equipment and improvements, net 8.3 Goodwill 207.8 Identifiable intangible assets 80.0 Miscellaneous 19.4 Total Assets $ 417.8 Liabilities Accounts payable, accrued expenses and other current liabilities $ 71.4 Long term liabilities 28.5 Total Liabilities 99.9 Net assets acquired $ 317.9 Goodwill recognized is attributable to a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has completed its final assessment of the fair values of John Wood Group's assets acquired and liabilities assumed. Since the initial preliminary estimates reported in the second quarter of fiscal 2020, the Company has updated certain amounts reflected in the final purchase price allocation, as summarized in the fair values of John Wood Group's nuclear business assets acquired and liabilities assumed as of the acquisition date set forth above. Identified intangibles include customer relationships, contracts and backlog and developed technology. The customer relationships, contracts and backlog intangible represents the fair value of existing contracts, underlying customer relationships and backlog. The customer relationships, contracts and backlog intangible and the developed technology intangible have lives of 12 and 15 years , respectively. No summarized unaudited pro forma results are provided for the John Wood Group nuclear business due to the immateriality of this acquisition relative to the Company's consolidated financial position and results of operations.

Sale of Energy, Chemicals and R

Sale of Energy, Chemicals and Resources ("ECR") Business	12 Months Ended
	Sep. 30, 2022
Discontinued Operations and Disposal Groups [Abstract]
Sale of Energy, Chemicals and Resources (ECR) Business	Sale of Energy, Chemicals and Resources ("ECR") Business On April 26, 2019, Jacobs completed the sale of its ECR business to Worley for a purchase price of $3.4 billion consisting of (i) $2.8 billion in cash plus (ii) 58.2 million ordinary shares of Worley, subject to adjustments for changes in working capital and certain other items (the “ECR sale”). As a result of the ECR sale, substantially all ECR-related assets and liabilities were sold (the "Disposal Group"). We determined that the Disposal Group should be reported as discontinued operations in accordance with ASC 210-05, Discontinued Operations as the disposal represented a strategic shift that had a major effect on our operations and financial results. As such, the financial results of the ECR business are reflected in our Consolidated Statements of Earnings as discontinued operations for all periods presented. As a result of the ECR sale, the Company recognized a pre-tax gain of $1.1 billion, $935.1 million of which was recognized in fiscal 2019, $110.2 million in fiscal 2020 and $15.6 million for the year ended October 1, 2021, respectively. In the second quarter of fiscal 2021, the Company received final working capital settlement proceeds of $36.4 million from Worley and as such, recorded a pre-tax gain of $15.6 million. Offsetting the proceeds from the settlement to arrive at the net gain amount were previously recorded accounts receivable from Worley. Investment in Worley Stock

Restructuring and Other Charges

Restructuring and Other Charges	12 Months Ended
	Sep. 30, 2022
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges During fiscal 2022, the Company implemented certain restructuring and integration initiatives relating to the StreetLight and BlackLynx acquisitions, the activities of which are expected to be substantially completed before the end of fiscal 2023. Also, during fiscal 2022, the Company implemented further real estate rescaling efforts that were associated with its fiscal 2020 transformation program relating to real estate and other staffing initiatives. These initiatives are expected to continue into fiscal 2023. During fiscal 2021, the Company implemented certain restructuring and integration initiatives relating to the Buffalo Group acquisition and the PA Consulting investment. The activities of the Buffalo Group initiative are substantially completed and the activities of the PA Consulting investment are expected to end before the end of fiscal 2025. Additionally, the Company recorded impairment charges on its investment in AWE ML during fiscal 2021. See related discussion in Note 8- Joint ventures, VIEs and other investments . During fiscal 2019 and continuing into fiscal 2020, the Company implemented certain restructuring and separation initiatives associated with the ECR sale, the KeyW acquisition, and other related cost reduction initiatives. Additionally, in fiscal 2020, the Company implemented certain restructuring and separation initiatives associated with the acquisition of John Wood Group's nuclear business. The restructuring activities and related costs were comprised mainly of separation and lease abandonment and sublease programs, while the separation activities and costs were mainly related to the engagement of consulting services and internal personnel and other related costs dedicated to the Company’s ECR-business separation. The activities of these initiatives have been substantially completed. As part of the Company's acquisition of CH2M Hill Companies, Ltd. ("CH2M") during fiscal 2018, the Company implemented certain restructuring plans that were comprised mainly of severance and lease abandonment programs as well as integration activities involving the engagement of professional services and internal personnel dedicated to the Company's integration management efforts. The activities of these initiatives have been substantially completed. Collectively, the above-mentioned restructuring activities are referred to as “Restructuring and other charges”. The following table summarizes the impacts of the Restructuring and other charges by operating segment in connection with the CH2M, KeyW, John Wood Group nuclear business and Buffalo Group, BlackLynx and StreetLight acquisitions and the PA Consulting investment, the ECR sale, the Company's transformation initiatives relating to real estate and other staffing programs and the impairment and final exit activities of the AWE ML investment for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Critical Mission Solutions $ 5,626 $ 5,079 $ 24,083 People & Places Solutions 64,204 7,077 170,631 PA Consulting 4,253 15,566 — Corporate 86,980 71,868 129,469 Total 161,063 99,590 324,183 Amounts included in: Operating profit (mainly Selling, General and Administrative costs (“SG&A") (1) 173,555 61,042 322,082 Other (Income) Expense, net (2) (12,492) 38,548 2,101 $ 161,063 $ 99,590 $ 324,183 (1) For the year ended September 30, 2022, amounts include $91.3 million pre-tax related to the final settlement of the Legacy CH2M Matter (as defined in Note 19 - Contractual Guarantees, Litigation, Investigations and Insurance ), net of previously recorded reserves, approximately $27 million in third party recoveries was recorded as receivables reducing SG&A and approximately $78.3 million in charges associated with real estate related impairments, the majority of which related to People and Places Solutions. Included in the years ended October 1, 2021 and October 2, 2020 were $2.4 million and $161.4 million in charges associated mainly with real estate impairments. (2) The year ended September 30, 2022 includes gains of $(8.7) million related to lease terminations. The year ended October 1, 2021 included $38.5 million in charges related to the impairment of our AWE ML investment. See Note 20 - Segment Information . The activity in the Company’s accrual for the Restructuring and other charges including the program activities described above for the year ended September 30, 2022 is as follows (in thousands): Balance at October 1, 2021 $ 14,031 Net Charges (1) 25,824 Payments & Usage (35,718) Balance at September 30, 2022 $ 4,137 (1) Exclude s $135.3 million in other net charges mainly comprised of $91.3 million pre-tax in charges and payments for the final settlement of the Legacy CH2M Matter (net of previously recorded reserves), approximately $27 million in third party recoveries was recorded as receivables reducing SG&A and $71.0 million associated mainly with real estate related impairments and other transformation activities described above during the year ended September 30, 2022 . The following table summarizes the Restructuring and other charges by major type of costs for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Lease Abandonments and Impairments (1) $ 69,802 $ 4,282 $ 151,150 Voluntary and Involuntary Terminations 5,635 15,773 53,484 Outside Services 22,340 35,210 88,476 Other (2) 63,286 44,325 31,073 Total $ 161,063 $ 99,590 $ 324,183 (1) The years ended September 30, 2022 and October 2, 2020 include approximately $78.3 million and $161.4 million, respectively, in charges associated with real estate related impairments reflected in Lease Abandonments and Impairments, offset by the gain of $(8.7) million related to lease terminations for the year ended September 30, 2022 . (2) Amounts in the year ended September 30, 2022 are mainly comprised of $91.3 million in other charges related to the final pre-tax settlement of the Legacy CH2M Matter, net of previously recorded reserves and approximately $27 million in third party recoveries was recorded as receivables reducing SG&A. Amounts in the year ended October 1, 2021 are mainly comprised of $38.5 million in charges related to the impairment of our AWE Management Ltd. investment. Cumulative amounts since 2017 incurred to date under our various restructuring and other activities described above by each major type of cost as of September 30, 2022 are as follows (in thousands): Lease Abandonments and Impairments $ 387,601 Voluntary and Involuntary Terminations 150,377 Outside Services 316,334 Other 208,265 Total $ 1,062,577

Commitments and Contingencies a

Commitments and Contingencies and Derivative Financial Instruments	12 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies and Derivative Financial Instruments	Commitments and Contingencies and Derivative Financial Instruments Derivative Financial Instruments The Company is exposed to interest rate risk under its variable rate borrowings and additionally, due to the nature of the Compan y's international operations, we are at times exposed to foreign currency risk. As such, we sometimes enter into foreign exchange contracts and interest rate contracts in order to limit our exposure to fluctuating foreign currencies and interest rates. During fiscal 2022 we entered into two treasury lock agreements with a total notional value of $500.0 million as of September 30, 2022 to manage our interest rate exposure to the anticipated issuance of fixed rate debt before December 2023. The two instruments locked in a fixed interest rate of 2.769% for the first $250 million of fixed rate debt to be issued and 2.672% for the remaining amount to be issued. The fair value of the treasury locks at September 30, 2022 was $40.9 million all of which is included in current assets within receivables and contract assets on the consolidated balance sheet. The unrealized net gain (loss) on these locks was $30.8 million, net of tax, and is included in accumulated other comprehensive income as of September 30, 2022. Upon issuance of the fixed rate debt, the gain (loss) will be amortized to interest expense over the term of the debt. In fiscal 2020 we entered into interest rate swap agreements with a notional va lue of $748.4 million as of September 30, 2022 to manage the interest rate exposure on our variable rate loans. Additionally, we entered into a cross-currency swap agreement with a notional value of $127.8 million to manage the interest rate and foreign currency exposure on our USD borrowings by a European subsidiary. By entering into the swap agreements, the Company converted the LIBOR and SONIA rate based liabilities into fixed rate liabilities and, for the cross currency swap, our LIBOR rate based borrowing in USD to a fixed rate Euro liability, for periods ranging from three and a half to ten years. For U.S. dollar denominated interest rate swap agreements, the Company receives the one month LIBOR rate and pays monthly a fixed rate ranging from 0.704% to 1.116%. For interest rate swap agreements denominated in British pounds, the Company receives a one month adjusted SONIA rate and pays a monthly fixed rate of 0.820%. Under the cross currency swap agreement, the Company receives the one month LIBOR rate plus 0.875% in USD and pays monthly a Euro fixed rate of 0.726% to 0.746% for the term of the swaps. The swaps were designated as cash-flow hedges in accordance with ASC 815, Derivatives and Hedging . See Note 2 - Significant Accounting Policies for additional discussion related to the application of SONIA to existing hedge contracts. The fair value of the interest rate and cross currency swaps at September 30, 2022 was $128.2 million , which is included in miscellaneous other assets on the consolidated balance sheet. The fair value of the interest rate and cross currency swaps at October 1, 2021 was $(0.8) million, of which, $(11.0) million is included in other deferred liabilities and $10.2 million is included in miscellaneous other assets on the consolidated balance sheet . The unrealized net gain on these interest rate and cross currency swaps was $87.5 million and $7.4 million , net of tax, and was included in accumulated other comprehensive income as of September 30, 2022 and October 1, 2021, respectively . Additionally, at September 30, 2022 and October 1, 2021, the Company held foreign exchange forward contracts in currencies that support our operations, including British Pound, Euro, Australian Dollar and other currencies, with notional values of $298.2 million and $506.5 million at September 30, 2022 and October 1, 2021, respectively. The length of these contracts currently ranges from one Australian Dollar foreign exchange forward contracts and subsequently entered into a new Australian Dollar instrument with an equal notional value which was ultimately settled later in fiscal 2022. The fair value measurements of these derivatives are being made using Level 2 inputs under ASC 820, Fair Value Measurement , as the measurements are based on observable inputs other than quoted prices in active markets. We are exposed to risk from credit-related losses resulting from nonperformance by counterparties to our financial instruments. We perform credit evaluations of our counterparties under forward exchange and interest rate contracts and expect all counterparties to meet their obligations. We have not experienced credit losses from our counterparties. Letters of Credit At September 30, 2022, the Company had issued and outstanding approximately $280.5 million in LOCs and $2.2 billion in surety bonds. Of the outstanding LOC amount, $1.3 million has been issued under the Revolving Credit Facility and $279.2 million are issued under separate, committed and uncommitted letter-of-credit facilities.

Contractual Guarantees, Litigat

Contractual Guarantees, Litigation, Investigations, and Insurance	12 Months Ended
	Sep. 30, 2022
Contractual Guarantees, Litigation, Investigations, and Insurance [Abstract]
Contractual Guarantees Litigation Investigations And Insurance	Contractual Guarantees, Litigation, Investigations and Insurance In the normal course of business, we make contractual commitments (some of which are supported by separate guarantees) and on occasion we are a party in a litigation or arbitration proceeding. The litigation or arbitration in which we are involved primarily includes personal injury claims, professional liability claims and breach of contract claims. Where we provide a separate guarantee, it is strictly in support of the underlying contractual commitment. Guarantees take various forms including surety bonds required by law, or standby letters of credit ("LOC" and also referred to as “bank guarantees”) or corporate guarantees given to induce a party to enter into a contract with a subsidiary. Standby LOCs are also used as security for advance payments or in various other transactions. The guarantees have various expiration dates ranging from an arbitrary date to completion of our work (e.g., engineering only) to completion of the overall project. See Note 18- Commitments and Contingencies and Derivative Financial Instruments for more information surrounding LOCs and surety bonds. We maintain insurance coverage for most insurable aspects of our business and operations. Our insurance programs have varying coverage limits depending upon the type of insurance, and include certain conditions and exclusions which insurance companies may raise in response to any claim that is asserted by or against the Company. We have also elected to retain a portion of certain losses, claims and liabilities that occur through the use of various deductibles, limits, and retentions under our insurance programs and utilize a number of internal financing mechanisms for these self insurance arrangements including the operation of certain captive insurance entities. As a result, we may be subject to a future liability for which we are only partially insured or completely uninsured. We intend to mitigate any such future liability by continuing to exercise prudent business judgment in negotiating the terms and conditions of the contracts which the Company enters with its clients. Our insurers are also subject to business risk and, as a result, one or more of them may be unable to fulfill their insurance obligations due to insolvency or otherwise. Additionally, as a contractor providing services to the U.S. federal government we are subject to many types of audits, investigations and claims by, or on behalf of, the government including with respect to contract performance, pricing, cost allocations, procurement practices, labor practices and socioeconomic obligations. Furthermore, our income, franchise and similar tax returns and filings are also subject to audit and investigation by the Internal Revenue Service, most states within the United States, as well as by various government agencies representing jurisdictions outside the United States. Our Consolidated Balance Sheets include amounts representing our probable estimated liability relating to such claims, guarantees, litigation, audits and investigations. We perform an analysis to determine the level of reserves to establish for insurance-related claims that are known and have been asserted against us, as well as for insurance-related claims that are believed to have been incurred based on actuarial analysis, but have not yet been reported to our claims administrators as of the respective balance sheet dates. We include any adjustments to such insurance reserves in our consolidated results of operations. Insurance recoveries are recorded as assets if recovery is probable and estimated liabilities are not reduced by expected insurance recoveries. The Company believes, after consultation with counsel, that such guarantees, litigation, U.S. government contract-related audits, investigations and claims and income tax audits and investigations should not have a material adverse effect on our consolidated financial statements, beyond amounts currently accrued. In 2012, CH2M HILL Australia PTY Limited, a subsidiary of CH2M, entered into a 50/50 integrated joint venture with Australian construction contractor UGL Infrastructure Pty Limited. The joint venture entered into a Consortium Agreement with General Electric and GE Electrical International Inc. The Consortium was awarded a subcontract by JKC Australia LNG Pty Limited ("JKC") for the engineering, procurement, construction and commissioning of a 360 MW Combined Cycle Power Plant for INPEX Operations Australia Pty Limited at Blaydin Point, Darwin, NT, Australia (the "Legacy CH2M Matter"). The subcontract was terminated in January 2017. In or around August 2017, the Consortium commenced an arbitration. On April 12, 2022, JKC and the Consortium entered into a confidential deed of settlement (“Settlement Agreement”). Under the terms of the Settlement Agreement, CH2M, as guarantor of CH2M Australia PTY Limited’s obligations with respect to the subcontract with JKC, made a cash payment to JKC in April 2022 of AUD640 million (or approximately $475 million using mid-April 2022 exchange rates). As a result of the settlement agreement, additional pre-tax charges of $91.3 million were recorded during the year ended September 30, 2022 for this matter (over amounts previously reserved and reported in long-term Other Deferred Liabilities in the Company's Consolidated Balance Sheet). The Settlement Agreement provided for a release of claims between JKC and each member of the Consortium, and in connection with this agreement the members of the Consortium also waived all claims against each other and their respective parent guarantors relating to the project. On December 22, 2008, a coal fly ash pond at the Kingston Power Plant of the Tennessee Valley Authority ("TVA") was breached, releasing fly ash waste into the Emory River and surrounding community. In February 2009, TVA awarded a contract to the Company to provide project management services associated with the clean-up. All remediation and dredging were completed in August 2013 by other contractors under direct contracts with TVA. The Company did not perform the remediation, and its scope was limited to program management services. Certain employees of the contractors performing the cleanup work on the project filed lawsuits against the Company beginning in August 2013, alleging they were injured due to the Company's failure to protect the plaintiffs from exposure to fly ash, and asserting related personal injuries. The primary case, Greg Adkisson, et al. v. Jacobs Engineering Group Inc., case No. 3:13-CV-505-TAV-HBG, filed in the U.S. District Court for the Eastern District of Tennessee, consists of 10 consolidated cases. This case and the related cases involve several hundred plaintiffs that were employees of the contractors that completed the remediation and dredging work. The cases are at various stages of litigation, and several of the cases are currently stayed pending resolution of other cases and/or appeal. Additionally, in May 2019, Roane County and the cities of Kingston and Harriman filed a lawsuit against TVA and the Company alleging that they misled the public about risks associated with the released fly ash. In October 2020, the Court granted Jacobs and TVA’s motion to dismiss the Roane County litigation and closed the case. In addition, in November 2019, a resident of Roane County, Margie Delozier, filed a putative class action against TVA and the Company alleging they failed to adequately warn local residents about risks associated with the released fly ash. The Company and TVA filed separate motions to dismiss the Delozier case in April 2020. In February 2021, the Court granted dismissal of the Delozier Complaint with prejudice, with the exception of plaintiffs’ nuisance cause of action, which plaintiffs voluntarily dismissed in June 2021. In August 2021, Thomas Ryan, a resident of Roane County, filed an action against Jacobs and TVA claiming personal injury and property damage. In June 2022, the Court granted Jacobs' motion to dismiss Ryan’s action in its entirety, closing the case. Separately, in February 2020, the Company learned that the district attorney in Roane County recommended that the Tennessee Bureau of Investigation investigate issues pertaining to clean up worker safety at Kingston. On November 16, 2021, the Roane County district attorney announced that it had concluded its investigation into issues pertaining to the Kingston coal ash spill cleanup. No indictments were issued. There has been no finding of liability against the Company or that any of the alleged illnesses are the result of exposure to fly ash in any of the above matters. The Company disputes the allegations asserted in all of the above matters and is vigorously defending these matters. The Company does not expect the resolution of these matters to have a material adverse effect on the Company's business, financial condition, results of operations or cash flows. On October 31, 2019, the Company received a request from the Enforcement Division of the Securities and Exchange Commission ("the SEC") for the production of certain information and documents. The information and documents sought by the SEC primarily relate to the operations of a joint venture in Morocco which was at one time partially-owned by the Company (and subsequently divested), including in respect of possible corrupt practices. In July 2022, the Company received a confirmatory letter from the SEC staff stating that its investigation of this matter had been terminated and that the staff does not intend to recommend an enforcement action against the Company.

Segment Information

Segment Information	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Segment Information	Segment Information The Company's three operating segments are comprised of its two global lines of business ("LOBs"): Critical Mission Solutions ("CMS") and People & Places Solutions ("P&PS") and its majority investment in PA Consulting. For further information on the PA Consulting investment, refer to Note 14- PA Consulting Business Combination . The Company’s Chair and Chief Executive Officer is the Chief Operating Decision Maker (“CODM”) and can evaluate the performance of each of these segments and make appropriate resource allocations among each of the segments. For purposes of the Company’s goodwill impairment testing, it has been determined that the Company’s operating segments are also its reporting units based on management’s conclusion that the components comprising each of its operating segments share similar economic characteristics and meet the aggregation criteria for reporting units in accordance with ASC 350, Intangibles-Goodwill and Other . Under this organization, the sales function is managed by LOB and PA Consulting, and accordingly, the associated cost is embedded in the segments and reported to the respective head of each segment. In addition, a portion of the costs of other support functions (e.g., finance, legal, human resources, and information technology) is allocated to each LOB using methodologies which, we believe, effectively attribute the cost of these support functions to the revenue generating activities of the Company on a rational basis. The cost of the Company’s cash incentive plan, the Leadership Performance Plan ("LPP"), formerly named the Management Incentive Plan, and the expense associated with the Jacobs Engineering Group Inc. 1999 Stock Incentive Plan (“1999 SIP”) have likewise been charged to the LOBs except for those amounts determined to relate to the business as a whole (which amounts remain in other corporate expenses). Financial information for each segment is reviewed by the CODM to assess performance and make decisions regarding the allocation of resources. The Company generally does not track assets by LOB, nor does it provide such information to the CODM. The CODM evaluates the operating performance of our operating segments using segment operating profit, which is defined as consolidated operating profit less “corporate charges” (e.g., the allocated amounts described above). The Company incurs certain SG&A that relate to its business as a whole which are not allocated to the segments. In the first quarter of fiscal 2023, the Company will begin reporting an operating segment, Divergent Solutions (DVS), in addition to the current operating segments. The following tables present total revenues and segment operating profit from continuing operations for each reportable segment (in thousands) and includes a reconciliation of segment operating profit to total U.S. GAAP operating profit by including certain corporate-level expenses, Restructuring and other charges (as defined in Note 17 -Restructuring and Other Charges ) and transaction and integration costs (in thousands). For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Revenues from External Customers: Critical Mission Solutions $ 5,233,629 $ 5,087,052 $ 4,965,952 People & Places Solutions 8,569,900 8,378,179 8,601,023 PA Consulting 1,119,296 627,401 — Total $ 14,922,825 $ 14,092,632 $ 13,566,975 For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Segment Operating Profit: Critical Mission Solutions $ 424,385 $ 447,161 $ 372,070 People & Places Solutions (1) 823,564 780,380 740,707 PA Consulting 232,225 151,071 — Total Segment Operating Profit 1,480,174 1,378,612 1,112,777 Other Corporate Expenses (2) (364,440) (340,129) (249,391) Restructuring, Transaction and Other Charges (3) (197,884) (350,394) (327,413) Total U.S. GAAP Operating Profit 917,850 688,089 535,973 Total Other (Expense) Income, net (4) (41,503) 7,513 (94,770) Earnings from Continuing Operations Before Taxes $ 876,347 $ 695,602 $ 441,203 (1) Includes $19.5 million, net, in charges related to a legal settlement for the year ended October 1, 2021. (2) Other corporate expenses include intangibles amortization of $198.6 million, $149.8 million and $90.6 million for the years ended September 30, 2022, October 1, 2021 and October 2, 2020, respectively, with the comparative increase mainly attributable to higher amortization from the PA Consulting investment. (3) Included in the year ended September 30, 2022 is $91.3 million pre-tax re lated to the final settlement of the Legacy CH2M Matter, net of previously recorded reserve s, approximately $27 million in third party recoveries was recorded as receivables reducing SG&A and $78.3 million of r eal estate impairment charges. Included in the year ended October 1, 2021 is $297.8 million of costs incurred in connection with the investment in PA Consulting, in part classified as compensation costs. Included in the years ended October 1, 2021 and October 2, 2020 were $2.4 million and $161.4 million in charges associated mainly with real estate impairments. (4) The year ended September 30, 2022 included a $13.9 million gain related to a cost method investment sold during the period and a gain of $8.7 million related to lease terminations. The years ended October 1, 2021 and October 2, 2020 include $34.7 million and $(74.3) million in fair value adjustments related to our investment in Worley stock (net of Worley stock div idends) and certain foreign currency r evaluations relating to ECR sale proceeds, respectively . The year ended October 1, 2021 includes $(38.5) million related to impairment of our AWE Management Ltd. investment and $49.6 million in fair value adjustments related to our investment in C3 stock. The investments in Worley and C3 were sold in fiscal 2021 and therefore there are no comparable amounts in the current fiscal year. Additionally, the increase in net interest expense year over year is primarily due to the higher levels of debt outstanding due to the funding of the StreetLight and BlackLynx acquisitions and increased borrowings associated with the payment of the Legacy CH2M Matter settlement in the current year, in addition to higher interest rates. Included in other corporate expenses in the above table are costs and expenses which relate to general corporate activities as well as corporate-managed benefit and insurance programs. Such costs and expenses include: (i) those elements of SG&A expenses relating to the business as a whole; (ii) those elements of our incentive compensation plans relating to corporate personnel whose other compensation costs are not allocated to the LOBs; (iii) the amortization of intangible assets acquired as part of business combinations; (iv) the quarterly variances between the Company’s actual costs of certain of its self-insured integrated risk and employee benefit programs and amounts charged to the LOBs; and (v) certain adjustments relating to costs associated with the Company’s international defined benefit pension plans. In addition, other corporate expenses may also include from time to time certain adjustments to contract margins (both positive and negative) associated with projects, as well as other items, where it has been determined that such adjustments are not indicative of the performance of the related LOB.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Revenue Accounting For Contracts	Revenue Accounting for Contracts Engineering, Procurement & Construction Contracts, Service Contracts and Software Contracts The Company recognizes engineering, procurement, and construction contract revenue over time, as performance obligations are satisfied, due to the continuous transfer of control to the customer in accordance with ASC Topic 606, Revenue from Contracts with Customers . Contracts which include engineering, procurement and construction services are generally accounted for as a single deliverable (a single performance obligation) and are no longer segmented between types of services. In some instances, the Company’s services associated with a construction activity are limited to specific tasks such as customer support, consulting or supervisory services. In these instances, the services are typically identified as separate performance obligations. The Company recognizes revenue using the percentage-of-completion method, based primarily on contract costs incurred to date compared to total estimated contract costs. The percentage-of-completion method (an input method) is the most representative depiction of the Company’s performance because it directly measures the value of the services transferred to the customer. Subcontractor materials, labor and equipment and, in certain cases, customer-furnished materials and labor and equipment are included in revenue and cost of revenue when management believes that the company is acting as a principal rather than as an agent (e.g., the company integrates the materials, labor and equipment into the deliverables promised to the customer or is otherwise primarily responsible for fulfillment and acceptability of the materials, labor and/or equipment). The Company recognizes revenue, but not profit, on certain uninstalled materials that are not specifically produced, fabricated, or constructed for a project. Revenue on these uninstalled materials is recognized when control is transferred. Changes to total estimated contract cost or losses, if any, are recognized in the period in which they are determined as assessed at the contract level. Pre-contract costs are expensed as incurred unless they are expected to be recovered from the client. Project mobilization costs are generally charged to project costs as incurred when they are an integrated part of the performance obligation being transferred to the client. Under the typical payment terms of our engineering, procurement and construction contracts, amounts are billed as work progresses in accordance with agreed-upon contractual terms at periodic intervals (e.g., biweekly or monthly) and customer payments are typically due within 30 to 60 days of billing, depending on the contract. For service contracts, the Company recognizes revenue over time using the cost-to-cost percentage-of-completion method. Service contracts that include multiple performance obligations are segmented between types of services. For contracts with multiple performance obligations, the Company allocates the transaction price to each performance obligation using an estimate of the stand-alone selling price of each distinct service in the contract. In some instances where the Company is standing ready to provide services, the Company recognizes revenue ratably over the service period. Under the typical payment terms of our service contracts, amounts are billed as work progresses in accordance with agreed-upon contractual terms, and customer payments are typically due within 30 to 60 days of billing, depending on the contract. Revenue for certain contracts related to the sale of software licenses is recognized at a point in time, typically at the time of delivery, in accordance with ASC 606. The software license sale will be treated as a performance obligation separate and distinct from any related service and maintenance. Direct costs of contracts include all costs incurred in connection with and directly for the benefit of client contracts, including depreciation and amortization relating to assets used in providing the services required by the related projects. The level of direct costs of contracts may fluctuate between reporting periods due to a variety of factors, including the amount of pass through costs we incur during a period. On those projects where we are acting as principal for subcontract labor or third-party materials and equipment, we reflect the amounts of such items in both revenues and costs (and we refer to such costs as “pass through costs”). Back charges to suppliers or subcontractors are recognized as a reduction of cost when it is determined that recovery of such cost is probable and the amounts can be reliably estimated. Disputed back charges are recognized when the same requirements described above have been satisfied. Variable Consideration The nature of the Company’s contracts gives rise to several types of variable consideration, including claims and unpriced change orders; awards and incentive fees; and liquidated damages and penalties. The Company recognizes revenue for variable consideration when it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. The Company estimates the amount of revenue to be recognized on variable consideration using the expected value (i.e., the sum of a probability-weighted amount) or the most likely amount method, whichever is expected to better predict the amount. Factors considered in determining whether revenue associated with claims (including change orders in dispute and unapproved change orders in regard to both scope and price) should be recognized include the following: (a) the contract or other evidence provides a legal basis for the claim, (b) additional costs were caused by circumstances that were unforeseen at the contract date and not the result of deficiencies in the company’s performance, (c) claim-related costs are identifiable and considered reasonable in view of the work performed, and (d) evidence supporting the claim is objective and verifiable. If the requirements for recognizing revenue for claims or unapproved change orders are met, revenue is recorded only when the costs associated with the claims or unapproved change orders have been incurred and only up to the amount of cost incurred which generally represents the amount of consideration that is not probable of reversal. The Company generally provides limited warranties for work performed under its engineering and construction contracts. The warranty periods typically extend for a limited duration following substantial completion of the Company’s work on the project. Historically, warranty claims have not resulted in material costs incurred for which the Company was not compensated for by the customer. See Note 3- Revenue Accounting for Contracts for further discussion. Joint Ventures and VIEs As is common to the industry, we execute certain contracts jointly with third parties through various forms of joint ventures. Although the joint ventures own and hold the contracts with the clients, the services required by the contracts are typically performed by us and our joint venture partners, or by other subcontractors under subcontracting agreements with the joint ventures. Many of these joint ventures are formed for a specific project. The assets of our joint ventures generally consist almost entirely of cash and receivables (representing amounts due from clients), and the liabilities of our joint ventures generally consist almost entirely of amounts due to the joint venture partners (for services provided by the partners to the joint ventures under their individual subcontracts) and other subcontractors. In general, at any given time, the equity of our joint ventures represents the undistributed profits earned on contracts the joint ventures hold with clients. Very few of our joint ventures have employees or third-party debt or credit facilities. The debt held by the joint ventures is non-recourse to the general credit of Jacobs. The assets of a joint venture are restricted for use to the obligations of the particular joint venture and are not available for general operations of the Company. Our risk of loss on these arrangements is usually shared with our partners. The liability of each partner is usually joint and several, which means that each partner may become liable for the entire risk of loss on the project. Furthermore, on some of our projects, the Company has granted guarantees which may encumber both our contracting subsidiary company and the Company for the entire risk of loss on the project. The Company is unable to estimate the maximum potential amount of future payments that we could be required to make under outstanding performance guarantees related to joint venture projects due to a number of factors, including but not limited to, the nature and extent of any contractual defaults by our joint venture partners, resource availability, potential performance delays caused by the defaults, the location of the projects, and the terms of the related contracts. See Note 19- Contractual Guarantees, Litigation, Investigations and Insurance for further discussion. Most of the joint ventures are deemed to be variable interest entities (“VIE”) because they lack sufficient equity to finance the activities of the joint venture. The Company uses a qualitative approach to determine if the Company is the primary beneficiary of the VIE, which considers factors that indicate a party has the power to direct the activities that most significantly impact the joint venture’s economic performance. These factors include the composition of the governing board, how board decisions are approved, the powers granted to the operational manager(s) and partner that holds that position(s), and to a certain extent, the partner’s economic interest in the joint venture. The Company analyzes each joint venture initially to determine if it should be consolidated or unconsolidated. • Consolidated if the Company is the primary beneficiary of a VIE, or holds the majority of voting interests of a non-VIE (and no significant participative rights are available to the other partners). • Unconsolidated if the Company is not the primary beneficiary of a VIE, or does not hold the majority of voting interest of a non-VIE. Our unconsolidated joint ventures (including equity method investments) are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment might not be recoverable, and impairment losses are recognized for such investments if there is a decline in fair value below carrying value that is considered to be other-than-temporary. See Note 8- Joint Ventures, VIEs and Other Investments for further discussion.
Fair Value Measurements	Fair Value Measurements Certain amounts included in the accompanying consolidated financial statements are presented at “fair value.” Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants as of the date fair value is determined (the “measurement date”). When determining fair value, we consider the principal or most advantageous market in which we would transact, and we consider only those assumptions we believe a typical market participant would consider when pricing an asset or liability. In measuring fair value, we use the following inputs in the order of priority indicated: Level 1 - Quoted prices in active markets for identical assets or liabilities. Level 2 - Observable inputs other than quoted prices in active markets included in Level 1, such as (i) quoted prices for similar assets or liabilities; (ii) quoted prices in markets that have insufficient volume or infrequent transactions (e.g., less active markets); and (iii) model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data for substantially the full term of the asset or liability. Level 3 - Unobservable inputs to the valuation methodology that are significant to the fair value measurement. The net carrying amounts of cash and cash equivalents, trade receivables and payables and short-term debt approximate fair value due to the short-term nature of these instruments. See Note 9- Borrowings for a discussion of the fair value of long-term debt. Certain other assets and liabilities, such as forward contracts and interest rate swap agreements we purchased as cash-flow hedges discussed in Note 18- Commitments and Contingencies and Derivative Financial Instruments are required to be carried in our Consolidated Financial Statements at Fair Value. The fair value of the Company’s reporting units (used for purposes of determining whether there is an impairment of the carrying value of goodwill) is determined using an income and market approach. Both approaches require us to make certain estimates and judgments. Under the income approach, fair value is determined by using the discounted cash flows of our reporting units. Under the market approach, the fair values of our reporting units are determined by reference to guideline companies that are reasonably comparable to our reporting units; the fair values are estimated based on the valuation multiples of earnings before taxes, interest, depreciation and amortization associated with the guideline companies. In assessing whether the carrying value of goodwill has been impaired, we utilize the results of both valuation techniques and consider the range of fair values indicated. With respect to equity-based compensation (i.e., share-based payments), we estimate the fair value of stock options granted to employees and directors using the Black-Scholes option-pricing model. Like all option-pricing models, the Black-Scholes model requires the use of subjective assumptions including (i) the expected volatility of the market price of the underlying stock, and (ii) the expected term of the award, among others. Accordingly, changes in assumptions and any subsequent adjustments to those assumptions can cause different fair values to be assigned to our future stock option awards. For restricted stock awards (including restricted stock units) containing market conditions, compensation expense is based on the fair value of such awards using a Monte Carlo simulation. For restricted stock awards (including restricted stock units) containing service and performance conditions, compensation expense is based on the closing stock price on the date of grant. The fair values of the assets owned by the various pension plans that the Company sponsors are determined based on the type of asset, consistent with U.S. GAAP. Equity securities are valued by using market observable data such as quoted prices. Publicly traded corporate equity securities are valued at the last reported sale price on the last business day of the year. Securities not traded on the last business day are valued at the last reported bid price. Fixed income investment funds categorized as Level 2 are valued by the trustee using pricing models that use verifiable observable market data (e.g., interest rates and yield curves observable at commonly quoted intervals), bids provided by brokers or dealers, or quoted prices of securities with similar characteristics. Real estate consists primarily of common or collective trusts, with underlying investments in real estate. These investments are valued using the best information available, including quoted market price, market prices for similar assets when available, internal cash flow estimates discounted at an appropriate interest rate, or independent appraisals, as appropriate. Management values insurance contracts and hedge funds using actuarial assumptions and certain values reported by fund managers. Fair value measurements relating to our business combinations are made primarily using Level 3 inputs including discounted cash flow and to the extent applicable, Monte Carlo simulation techniques. Fair value for the identified intangible assets is generally estimated using inputs primarily for the income approach using the multiple period excess earnings method and the relief from royalties method. The significant assumptions used in estimating fair value include (i) revenue projections of the business, including profitability, (ii) attrition rates and (iii) the estimated discount rate that reflects the level of risk associated with receiving future cash flows. Other personal property assets, such as furniture, fixtures and equipment, are valued using the cost approach, which is based on replacement or reproduction costs of the asset less depreciation. The fair value of the contingent consideration is estimated using a Monte Carlo simulation and the significant assumptions used include projections of revenues and probabilities of meeting those projections. Key inputs to the valuation of the noncontrolling interests include projected cash flows and the expected volatility associated with those cash flows. The fair values for the asset groups relating to the impaired long-lived assets (see Note 10, Leases ) were estimated primarily using discounted cash flow models (income approach) with Level 3 inputs. The significant assumptions used in estimating fair value include the expected downtime prior to the commencement of future subleases, projected sublease income over the remaining lease periods and discount rates that reflects the level of risk associated with receiving future cash flows. The methodologies described above and elsewhere in these Notes to Consolidated Financial Statements may produce a fair value measure that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement.
Cash Equivalents	Cash Equivalents We consider all highly liquid investments with original maturities of less than three months to be cash equivalents. Cash equivalents at September 30, 2022 and October 1, 2021 consisted primarily of money market mutual funds and overnight bank deposits.
Receivables and Billings In Excess of Costs	Receivables, Contract Assets and Contract Liabilities Receivables include amounts billed, net and unbilled receivables. Amounts billed, net consist of amounts invoiced to clients in accordance with the terms of our client contracts and are shown net of an allowance for doubtful accounts. We anticipate that substantially all of such billed amounts will be collected over the next twelve months. Unbilled receivables and other, which represent an unconditional right to payment subject only to the passage of time in connection with our client contracts, are reclassified to amounts billed when they are billed under the terms of the contract. We anticipate that substantially all of such unbilled amounts will be billed and collected over the next twelve months. Contract assets represent unbilled amounts where the right to payment is subject to more than merely the passage of time and includes performance-based incentives and services provided ahead of agreed contractual milestones. Contract assets are transferred to unbilled receivables when the right to consideration becomes unconditional and are transferred to amounts billed upon invoicing. Contract liabilities represent amounts billed to clients in excess of revenue recognized to date. We anticipate that substantially all such amounts will be earned over the next twelve months. In order to manage short-term liquidity and credit exposure, Jacobs may sell current customer receivables to third parties. When Jacobs sells customer receivables to third parties it accelerates the receipt of cash that would otherwise have been collected from customers and records these transactions as reductions to the receivable amounts. Jacobs does not maintain continuing involvement in these arrangements.
Property, Equipment and Improvements	Property, Equipment, and Improvements Property, equipment and improvements are carried at cost, and are shown net of accumulated depreciation and amortization in the accompanying Consolidated Balance Sheets. Depreciation and amortization is computed primarily by using the straight-line method over the estimated useful lives of the assets. The cost of leasehold improvements is amortized using the straight-line method over the lesser of the estimated useful life of the asset or the remaining term of the related lease. Estimated useful lives range from 20 to 40 years for buildings, from 3 to 10 years for equipment and from 4 to 10 years for leasehold improvements.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill represents the excess of the cost of an acquired business over the fair value of the net tangible and intangible assets acquired. Goodwill and intangible assets with indefinite lives are not amortized; instead, on an annual basis we test goodwill and intangible assets with indefinite lives for possible impairment. Intangible assets with finite lives are amortized on a straight-line basis over the useful lives of those assets.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Our long-lived assets other than goodwill principally consist of right-of-use (ROU) lease assets, property, equipment and improvements, and finite-lived intangible assets. These long-lived assets are evaluated for impairment for each of our asset groups in accordance with ASC 360 by first identifying whether indicators of impairment exist. If such indicators are present, we assess long-lived asset groups for recoverability based on estimated future undiscounted cash flows. For asset groups where the recoverability test fails, the fair value of each asset group is then estimated and compared to its carrying amount. An impairment loss is recognized for the amount by which an asset group’s carrying value exceeds its fair value.
Foreign Currencies	Foreign Currencies In preparing our Consolidated Financial Statements, it is necessary to translate the financial statements of our subsidiaries operating outside the U.S., which are denominated in currencies other than the U.S. dollar, into the U.S. dollar. In accordance with U.S. GAAP, revenues and expenses of operations outside the U.S. are translated into U.S. dollars using weighted-average exchange rates for the applicable periods being translated while the assets and liabilities of operations outside the U.S. are generally translated into U.S. dollars using period-end exchange rates. The net effect of foreign currency translation adjustments is included in stockholders’ equity as a component of accumulated other comprehensive income (loss) in the accompanying Consolidated Balance Sheets.
Share-based Payments	Share-Based Payments We measure the value of services received from employees and directors in exchange for an award of an equity instrument based on the grant-date fair value of the award. The fair value is recognized as a non-cash cost on a straight-line basis over the period the individual provides services, which is typically the vesting period of the award with the exception of awards containing an internal performance measure, such as Earnings Per Share growth and Return on Invested Capital, which is recognized on a straight-line basis over the vesting period subject to the probability of meeting the performance requirements and adjusted for the number of shares expected to be earned. The cost of these awards is recorded in selling, general and administrative expense in the accompanying Consolidated Statements of Earnings.
Concentration of Credit Risk	Concentrations of Credit Risk Our cash balances and cash equivalents are maintained in accounts held by major banks and financial institutions located in North America, South America, Europe, the Middle East, India, Australia, Africa and Asia. In the normal course of business, and consistent with industry practices, we grant credit to our clients without requiring collateral. Concentrations of credit risk is the risk that, if we extend a significant amount of credit to clients in a specific geographic area or industry, we may experience disproportionately high levels of default if those clients are adversely affected by factors particular to their geographic area or industry. Concentrations of credit risk relative to trade receivables are limited due to our diverse client base, which includes the U.S. federal government and multi-national corporations operating in a broad range of industries and geographic areas. Additionally, in order to mitigate credit risk, we continually evaluate the credit worthiness of our major commercial clients.
Leases	Leases The Company accounts for its leases in accordance with ASC 842, Leases ("ASC 842") . ASC 842 requires lessees to recognize assets and liabilities for most leases. The Company determines if an arrangement is a lease at contract inception. A lease exists when a contract conveys to the customer the right to control the use of an identified asset for a period of time in exchange for consideration. The definition of a lease embodies two conditions: (1) there is an identified asset in the contract, and (2) the customer has the right to control the use of the identified asset. Lessees are required to classify leases as either finance or operating leases. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. ASC 842 provided several optional practical expedients for use in transition to and ongoing application of ASC 842. The Company elected to utilize the package of practical expedients in ASC 842-10-65-1(f) that, upon adoption of ASC 842, allows entities to (1) not reassess whether any expired or existing contracts are or contain leases, (2) retain the classification of leases (e.g., operating or finance lease) existing as of the date of adoption and (3) not reassess initial direct costs for any existing leases. The Company did not elect the practical expedient pertaining to the use of hindsight. The Company elected to utilize the practical expedient in ASC 842-10-15-37 in which the Company has chosen to account for each separate lease component of a contract and its associated non-lease components as a single lease component. The Company’s right-of use assets and lease liabilities relate to real estate, project assets used in connection with long-term construction contracts, IT assets and vehicles. The Company’s leases have remaining lease terms of one year to thirteen years. The Company’s lease obligations are primarily for the use of office space and are primarily operating leases. Certain of the Company’s leases contain renewal, extension, or termination options. The Company assesses each option on an individual basis and will only include options reasonably certain of exercise in the lease term. The Company generally considers the base term to be the term provided in the contract. None of the Company’s lease agreements contain material options to purchase the leased property, material residual value guarantees, or material restrictions or covenants. Long-term project asset and vehicle leases (leases with terms greater than twelve months), along with all real estate and IT asset leases, are recorded on the consolidated balance sheet at the present value of the minimum lease payments not yet paid. Because the Company primarily acts as a lessee and the rates implicit in its leases are not readily determinable, the Company generally uses its incremental borrowing rate on the lease commencement date to calculate the present value of future lease payments. Certain leases include payments that are based solely on an index or rate. These variable lease payments are included in the calculation of the ROU asset and lease liability and are initially measured using the index or rate at the lease commencement date. Other variable lease payments, such as payments based on use and for property taxes, insurance, or common area maintenance that are based on actual assessments are excluded from the ROU asset and lease liability and are expensed as incurred. In addition to the present value of the future lease payments, the calculation of the ROU asset also includes any deferred rent, lease prepayments and initial direct costs of obtaining the lease, such as commissions. Certain lease contracts contain nonlease components such as maintenance and utilities. The Company has made an accounting policy election, as allowed under ASC 842-10-15-37 and discussed above, to capitalize both the lease component and nonlease components of its contracts as a single lease component for all of its right-of-use assets. Short-term project asset and vehicle leases (project asset and vehicle leases with an initial term of twelve months or less or leases that are cancellable by the lessee and lessor without significant penalties) are not recorded on the consolidated balance sheet and are expensed on a straight-line basis over the lease term. The majority of the Company’s short-term leases relate to equipment used on construction projects. These leases are entered into at agreed upon hourly, daily, weekly or monthly rental rates for an unspecified duration and typically have a termination for convenience provision. Such equipment leases are considered short-term in nature unless it is reasonably certain that the equipment will be leased for a term greater than twelve months.
Pensions	Pensions We use certain assumptions and estimates in order to calculate periodic pension cost and the value of the assets and liabilities of our pension plans. These assumptions involve discount rates, investment returns and projected salary increases, among others. Changes in the actuarial assumptions may have a material effect on the plans’ liabilities and the projected pension expense. We use a corridor approach to amortize actuarial gains and losses. Under this approach, net gains or losses in excess of ten percent of the larger of the pension benefit obligation or the market-related value of the assets are We measure our defined benefit plan assets and obligations as of the end of the month closest to their fiscal year end, which is September 30, 2022 as the alternative measurement date in accordance with FASB guidance ASU 2015-04, Compensation Retirement Benefit (Topic 715): Practical Expedient for the Measurement Date of an Employer’s Defined Benefit Obligation and Plan Asset
Redeemable Noncontrolling Interests	Redeemable Noncontrolling Interests In connection with the PA Consulting investment, the Company recorded redeemable noncontrolling interests, representing the interest holders' 35% equity interest in the form of preferred and common shares of PA Consulting. The preferred shares are entitled to a cumulative annual compounding 12% dividend based on the outstanding preferred share subscription price. These interest holders have certain option rights to put the preferred and common share interests back to the Company at a value based on the fair value of PA Consulting (the redemption values). The primary inputs and assumptions impacting the fair value of PA Consulting include projections of revenue and earnings before interest, taxes, depreciation and amortization and discount rates applied thereto. Additionally, the Company has an option to call the interests for certain individual shareholders in certain circumstances. Because the interests are redeemable at the option of the holders and not solely within the control of the Company, the Company classified the interests in redeemable noncontrolling interests within its Consolidated Balance Sheet at their redemption values. The optional redemption features may become exercisable no earlier than five years from the March 2, 2021 closing date, or upon the occurrence of certain other events. The Company has deemed these interests probable of becoming redeemable in the future and requiring their measurement at the greater of (i) the redemption amount that would be paid if settlement occurred at the balance sheet date, or (ii) the historical value resulting from the original acquisition date fair value plus the impact of any earnings or loss attribution amounts, including dividends. The fair value of the PA Consulting redeemable noncontrolling interest is determined using a combination of the income and market approaches. Under the income approach, fair value is determined by using the projected discounted cash flows of PA Consulting. Under the market approach, the fair value is determined by reference to guideline companies that are reasonably comparable to PA Consulting; the fair value is estimated based on the valuation multiples of earnings before interest, taxes, depreciation and amortization.
Income Taxes	Income Taxes We determine our consolidated income tax expense using the asset and liability method prescribed by U.S. GAAP. Under this method, deferred tax assets and liabilities are recognized for the temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and income tax purposes. Such deferred tax assets and liabilities are adjusted, as appropriate, to reflect changes in tax rates expected to be in effect when the temporary differences reverse. If and when we determine that a deferred tax asset will not be realized for its full amount, we will recognize and record a valuation allowance with a corresponding charge to earnings. Judgment is required in determining our provision for income taxes. In the normal course of business, we may engage in numerous transactions every day for which the ultimate tax outcome (including the period in which the transaction will ultimately be included in taxable income or deducted as an expense) is uncertain. Additionally, we file income, franchise, gross receipts and similar tax returns in many jurisdictions. Our tax returns are subject to audit and investigation by the Internal Revenue Service, most states in the U.S., and by various government agencies representing many jurisdictions outside the U.S.
Contractual Guarantees, Litigation, Investigations and Insurance	Contractual Guarantees, Litigation, Investigations and Insurance In the normal course of business we are subject to certain contractual guarantees and litigation. We record in the Consolidated Balance Sheets amounts representing our estimated liability relating to such guarantees, litigation and insurance claims. Guarantees are accounted for in accordance with ASC 460-10, Guarantees , at fair value at the inception of the guarantee. We perform an analysis to determine the level of reserves to establish for both insurance-related claims that are known and have been asserted against us as well as for insurance-related claims that are believed to have been incurred based on actuarial analysis, but have not yet been reported to our claims administrators as of the respective balance sheet dates. We include any adjustments to such insurance reserves in our Consolidated Statements of Earnings. In addition, as a contractor providing services to various agencies of the U.S. federal government, we are subject to many levels of audits, investigations, and claims by, or on behalf of, the U.S. federal government with respect to contract performance, pricing, costs, cost allocations and procurement practices. We adjust revenues based upon the amounts we expect to realize considering the effects of any client audits or governmental investigations.
Business Combinations	Business Combinations U.S. GAAP requires that the purchase price paid for business combinations accounted for using the acquisition method be allocated to the assets and liabilities acquired based on their respective Fair Values. The Company makes certain estimates and judgments relating to other assets and liabilities acquired as well as any identifiable intangible assets acquired.
Use of Estimates and Assumptions	Use of Estimates and Assumptions The preparation of financial statements in conformity with U.S. GAAP requires us to employ estimates and make assumptions that affect the reported amounts of certain assets and liabilities; the revenues and expenses reported for the periods covered by the financial statements; and certain amounts disclosed in these Notes to the Consolidated Financial Statements. Although such estimates and assumptions are based on management’s most recent assessment of the underlying facts and circumstances utilizing the most current information available and past experience, actual results could differ significantly from those estimates and assumptions. Our estimates, judgments and assumptions are evaluated periodically and adjusted accordingly.
New Accounting Pronouncements	New Accounting Pronouncements ASU 2020-04, Reference Rate Reform, (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting is intended to provide relief for entities impacted by reference rate reform and contains provisions and optional expedients designed to simplify requirements around designation of hedging relationships, probability assessments of hedged forecasted transactions and accounting for modifications of contracts that refer to LIBOR or other rates affected by reference rate reform. The guidance is elective and is effective on the date of issuance. ASU 2020-04 is applied prospectively to contract modifications and as of the effective date for existing and new eligible hedging relationships. The guidance is temporary and will generally not be applicable to contract modifications which occur after December 31, 2022. The adoption of the new guidance in the first quarter of fiscal 2022 allowed the Company to continue its British pound denominated interest rate hedge relationships which previously defined LIBOR as the benchmark interest rate and in December 2021 were amended to replace LIBOR with the Sterling Overnight Index Average rate ("SONIA"). ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, is effective for fiscal years beginning after December 15, 2022, with early adoption permitted. ASU 2021-08 requires contract assets and contract liabilities (i.e., deferred revenue) acquired in a business combination to be recognized and measured by the acquirer on the acquisition date in accordance with ASC 606, Revenue from Contracts with Customers. Generally, this new guidance will result in the acquirer recognizing contract assets and contract liabilities at the same amounts recorded by the acquiree. The Company adopted the new guidance in the first quarter of fiscal 2022 and the adoption had no impact on the Company's financial position, results of operations or cash flows.

Description of Business and B_2

Description of Business and Basis of Presentation (Tables)	12 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenues Realized from Each of These Types of Contracts	The percentage of revenues realized from each of these types of contracts for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020 was as follows: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Cost-reimbursable 74% 76% 76% Fixed-price 26% 24% 24%

Revenue Accounting for Contra_2

Revenue Accounting for Contracts and Adoption of ASC Topic 606 (Tables)	12 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table further disaggregates our revenue by geographic area for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Revenues: United States $ 9,875,252 $ 9,671,281 $ 10,158,508 Europe 3,488,317 3,140,114 2,253,284 Canada 269,386 227,692 227,067 Asia 140,663 114,118 117,698 India 114,235 70,772 50,618 Australia and New Zealand 706,283 647,866 537,076 South America and Mexico — — 11 Middle East and Africa 328,689 220,789 222,713 Total $ 14,922,825 $ 14,092,632 $ 13,566,975
Schedules of Concentration of Risk	The following table presents the revenues earned directly or indirectly from the U.S. federal government and its agencies, expressed as a percentage of total revenues: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 31% 33% 33%

Earnings Per Share and Certai_2

Earnings Per Share and Certain Related Information (Tables)	12 Months Ended
	Sep. 30, 2022
Earnings Per Share Reconciliation [Abstract]
Earnings Per Share	The following table reconciles the denominator used to compute basic EPS to the denominator used to compute diluted EPS for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Numerator for Basic and Diluted EPS: Net earnings attributable to Jacobs from continuing operations $ 644,071 $ 467,022 $ 353,861 Preferred Redeemable Noncontrolling interests redemption value adjustment (See Note 14- PA Consulting Business Combination ) — (57,307) — Net earnings from continuing operations allocated to participating securities — — (72) Net earnings from continuing operations allocated to common stock for EPS calculation $ 644,071 $ 409,715 $ 353,789 Net earnings attributable to Jacobs from discontinued operations $ (32) $ 10,008 $ 137,984 Net earnings from discontinued operations allocated to participating securities — — (28) Net earnings from discontinued operations allocated to common stock for EPS calculation $ (32) $ 10,008 $ 137,956 Net earnings allocated to common stock for EPS calculation $ 644,039 $ 419,723 $ 491,745 Denominator for Basic and Diluted EPS: Weighted average basic shares 128,665 130,194 131,541 Shares allocated to participating securities — — (27) Shares used for calculating basic EPS attributable to common stock 128,665 130,194 131,514 Effect of dilutive securities: Stock compensation plans 780 1,080 1,207 Shares used for calculating diluted EPS attributable to common stock 129,445 131,274 132,721 Net Earnings Per Share: Basic Net Earnings from Continuing Operations Per Share $ 5.01 $ 3.15 $ 2.69 Basic Net Earnings from Discontinued Operations Per Share $ — $ 0.08 $ 1.05 Basic Earnings Per Share: $ 5.01 $ 3.22 $ 3.74 Diluted Net Earnings from Continuing Operations Per Share $ 4.98 $ 3.12 $ 2.67 Diluted Net Earnings from Discontinued Operations Per Share $ — $ 0.08 $ 1.04 Diluted Earnings Per Share: $ 4.98 $ 3.20 $ 3.71
Share Repurchases	The following table summarizes the activity under the 2020 Repurchase Authorizations during fiscal 2022: Amount Authorized Average Price Per Share (1) Shares Repurchased Total Shares Retired $1,000,000,000 $133.05 2,472,728 2,472,728 (1) Includes commissions paid and calculated at the average price per share
Dividends Paid	Dividends paid through September 30, 2022 and the preceding fiscal year are as follows: Declaration Date Record Date Payment Date Cash Amount (per share) July 13, 2022 July 29, 2022 August 26, 2022 $0.23 April 28, 2022 May 27, 2022 June 24, 2022 $0.23 January 26, 2022 February 25, 2022 March 25, 2022 $0.23 September 23, 2021 October 15, 2021 October 29, 2021 $0.21 July 14, 2021 July 30, 2021 August 27, 2021 $0.21 April 22, 2021 May 28, 2021 June 25, 2021 $0.21 January 27, 2021 February 26, 2021 March 26, 2021 $0.21

Goodwill and Intangibles (Table

Goodwill and Intangibles (Tables)	12 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Carrying Value of Goodwill by Reportable Segment Appearing in Accompanying Consolidated Balance Sheets	The carrying value of goodwill associated with continuing operations and appearing in the accompanying Consolidated Balance Sheets September 30, 2022 and October 1, 2021 was as follows (in thousands): Critical Mission Solutions People & Places Solutions PA Consulting Total Balance October 1, 2021 $ 2,550,631 $ 3,240,783 $ 1,405,586 $ 7,197,000 Acquired 195,756 116,525 17,245 329,526 Post-Acquisition Adjustments — — 5,720 5,720 Foreign currency translation and other (30,194) (47,995) (269,399) (347,588) Balance September 30, 2022 $ 2,716,193 $ 3,309,313 $ 1,159,152 $ 7,184,658
Schedule of Acquired Intangibles in Accompanying Consolidated Balance Sheets	The following table provides certain information related to the Company’s acquired intangibles in the accompanying Consolidated Balance Sheets for the year ended September 30, 2022 (in thousands): Customer Relationships, Contracts and Backlog Developed Technology Trade Names Total Balances, October 1, 2021 $ 1,309,061 $ 40,020 $ 216,677 $ 1,565,758 Acquired 101,527 62,000 392 163,919 Amortization (175,592) (12,055) (10,955) (198,602) Foreign currency translation and other (98,558) (1,034) (37,431) (137,023) Balances, September 30, 2022 $ 1,136,438 $ 88,931 $ 168,683 $ 1,394,052 Weighted Average Amortization Period (years) 7 7 18 9
Schedule of Estimated Amortization Expense of Intangible Assets	The following table presents estimated amortization expense of intangible assets for fiscal 2023 and for the succeeding years. The amounts below include preliminary amortization estimates for the StreetLight opening balance sheet fair values that are still preliminary and are subject to change. Fiscal Year (in millions) 2023 $ 194.8 2024 194.4 2025 194.0 2026 171.3 2027 140.1 Thereafter 499.5 Total $ 1,394.1

Other Financial Information (Ta

Other Financial Information (Tables)	12 Months Ended
	Sep. 30, 2022
Other Financial Information [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	The following table presents the components of receivables and contract assets appearing in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 as well as certain other related information (in thousands): September 30, 2022 October 1, 2021 Components of receivables: Amounts billed, net $ 1,400,088 $ 1,278,087 Unbilled receivables and other 1,523,249 1,343,588 Contract assets 482,044 479,743 Total receivables and contract assets, net $ 3,405,381 $ 3,101,418 Other information about receivables: Amounts due from the United States federal government included above, net of contract liabilities $ 749,323 $ 563,009
Property, Plant and Equipment	The following table presents the components of our property, equipment and improvements, net at September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Land $ 478 $ 970 Buildings 46,244 52,822 Equipment 643,805 586,302 Leasehold improvements 179,187 201,522 Construction in progress 34,880 21,188 904,594 862,804 Accumulated depreciation and amortization (557,918) (509,687) $ 346,676 $ 353,117
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country	The following table presents our property, equipment and improvements, net by geographic area for the years ended September 30, 2022 and October 1, 2021 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 Property, equipment and improvements, net: United States $ 226,639 $ 229,752 Europe 87,331 95,746 Canada 5,210 2,076 Asia 2,578 2,170 India 9,659 11,545 Australia and New Zealand 13,211 10,401 Middle East and Africa 2,048 1,427 Total $ 346,676 $ 353,117
Accrued Liabilities	The following table presents the components of “Accrued liabilities” shown in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Accrued payroll and related liabilities $ 947,547 $ 1,042,265 Project-related accruals 28,178 56,083 Non project-related accruals and other 279,062 239,851 Insurance liabilities 63,183 73,016 Sales and other similar taxes 93,500 94,393 Dividends payable 30,292 27,951 Total $ 1,441,762 $ 1,533,559
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the Company's roll forward of accumulated income (loss) after-tax for the years ended September 30, 2022 and October 1, 2021 (in thousands): Change in Pension and Retiree Medical Plan Liabilities Foreign Currency Translation Adjustment (1) Gain/(Loss) on Cash Flow Hedges Total Balance at October 2, 2020 $ (498,726) $ (419,715) $ (14,616) $ (933,057) Other comprehensive income (loss) 94,606 12,475 14,339 121,420 Reclassifications from other comprehensive income (loss) 9,559 — 7,636 17,195 Balance at October 1, 2021 $ (394,561) $ (407,240) $ 7,359 $ (794,442) Other comprehensive income (loss) 87,034 (378,800) 108,555 (183,211) Reclassifications from other comprehensive income (loss) 132 — 2,391 2,523 Balance at September 30, 2022 $ (307,395) $ (786,040) $ 118,305 $ (975,130) (1) Included in the overall foreign currency translation adjustment for the years ended September 30, 2022 and October 1, 2021 is $144.3 million and $(0.9) million, respectively, in unrealized gains (losses) on long-term foreign currency denominated intercompany loans not anticipated to be settled in the foreseeable future.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Components of Consolidated Income Tax Expense	The following table presents the components of our consolidated income taxes for continuing operations for years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Current income tax (benefit) expense from continuing operations: Federal $ (35,291) $ 91,313 $ (37,030) State 4,526 30,886 (5,021) Foreign 79,822 38,959 41,616 Total current tax expense from continuing operations 49,057 161,158 (435) Deferred income tax expense (benefit) from continuing operations: Federal 56,526 35,109 53,485 State 17,178 21,826 7,133 Foreign 38,142 56,688 (4,863) Total deferred tax expense from continuing operations 111,846 113,623 55,755 Consolidated income tax expense from continuing operations $ 160,903 $ 274,781 $ 55,320
Components of Deferred Tax Assets	The following table presents the components of our net deferred tax (liabilities) assets at September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Deferred tax assets: Obligations relating to: Other employee benefit plans 138,897 156,931 Net operating losses 132,999 197,929 Foreign tax credit 83,697 87,689 Contract revenues and costs — 81,633 Lease liability 138,635 155,064 Unrealized foreign exchange loss 46,005 — Other 13,005 19,689 Valuation allowance (113,483) (188,662) Gross deferred tax assets 439,755 510,273 Deferred tax liabilities: Contract revenues and costs (6,007) — Depreciation and amortization (431,946) (436,324) Lease right of use asset (71,658) (93,338) Partnership investment (52,787) (72,560) Hedge Investments (38,994) (13,754) Unrealized Foreign Exchange Gain (45,754) — Other (30,206) (5,484) Gross deferred tax liabilities (677,352) (621,460) Net deferred tax liabilities $ (237,597) $ (111,187)
Income Tax Benefits Realized from the Exercise of Nonqualified Stock Options, and Disqualifying Dispositions of Stock Sold Under our Employee Stock Purchase Plans	The following table presents the income tax benefits from continuing operations realized from the exercise of non-qualified stock options and disqualifying dispositions of stock sold under our employee stock purchase plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in millions): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 $ 2.2 $ 9.9 $ 10.2
Income Tax Expense in Consolidated Statements of Earnings	The following table reconciles total income tax expense from continuing operations using the statutory U.S. federal income tax rate to the consolidated income tax expense for continuing operations shown in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (dollars in thousands): For the Years Ended September 30, 2022 % October 1, 2021 % October 2, 2020 % Statutory amount $ 184,033 21.0 % $ 146,078 21.0 % $ 92,652 21.0 % State taxes, net of the federal benefit 19,316 2.2 % 14,564 2.1 % 7,254 1.6 % Exclusion of tax on non-controlling interests (7,533) (0.9) % (7,999) (1.1) % (6,622) (1.5) % Foreign: Difference in tax rates of foreign operations (2,516) (0.3) % 3,684 0.5 % (6,267) (1.4) % Expense/(benefit) from foreign valuation allowance change 2,982 0.3 % 2,148 0.3 % (16,861) (3.8) % Nondeductible compensation — — % 48,727 7.0 % — — % U.S. tax cost (benefit) of foreign operations 48,843 5.6 % 35,228 5.1 % 42,992 9.7 % Tax differential on foreign earnings 49,309 5.6 % 89,787 12.9 % 19,864 4.5 % Foreign tax credits (33,734) (3.8) % (25,230) (3.6) % (26,471) (6.0) % Tax Rate Change 3,210 0.4 % 25,588 3.7 % (6,811) (1.5) % Valuation allowance (59,121) (6.7) % 38,928 5.6 % — — % Uncertain tax positions (1,439) (0.2) % 978 0.1 % (11,338) (2.6) % Other items: Energy efficient commercial buildings deduction (2,681) (0.3) % (3,760) (0.5) % (7,267) (1.6) % Disallowed officer compensation 6,034 0.7 % 6,689 1.0 % 5,081 1.2 % Stock compensation (2,168) (0.2) % (9,946) (1.4) % (10,234) (2.3) % Other items – net 5,677 0.6 % (896) (0.1) % (788) (0.2) % Total other items 6,862 0.8 % (7,913) (1.1) % (13,208) (3.0) % Taxes on income from continuing operations $ 160,903 18.4 % $ 274,781 39.5 % $ 55,320 12.5 %
Income Tax Payments	The following table presents income tax payments, net made during the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in millions): September 30, 2022 October 1, 2021 October 2, 2020 $ 113.9 $ 75.6 $ 39.8
Components of our Consolidated Earnings Before Taxes	The following table presents the components of our consolidated earnings from continuing operations before taxes for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 United States earnings $ 415,673 $ 634,820 $ 208,302 Foreign earnings 460,674 60,782 232,901 $ 876,347 $ 695,602 $ 441,203
Schedule of Unrecognized Tax Benefits Roll Forward	The following table presents the reconciliation of the beginning and ending amount of unrecognized tax benefits, with StreetLight and PA Consulting related impacts added for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Balance, beginning of year $ 113,633 $ 102,484 $ 104,355 Acquisitions/Divestitures 192 7,639 — Additions based on tax positions related to the current year 1,136 7,088 1,064 Additions for tax positions of prior years 1,207 1,711 7,472 Reductions for tax positions of prior years (3,672) (4,851) (6,695) Settlement (23,603) (438) (3,712) Balance, end of year $ 88,893 $ 113,633 $ 102,484

Joint Ventures and VIE's and _2

Joint Ventures and VIE's and Other Investments (Tables)	12 Months Ended
	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Variable Interest Entities	Summary financial information of consolidated VIEs is as follows (in millions): September 30, 2022 October 1, 2021 Current assets $ 353.9 $ 289.7 Non-Current assets — 0.1 Total assets $ 353.9 $ 289.8 Current liabilities $ 228.1 $ 220.8 Total liabilities $ 228.1 $ 220.8 For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Revenue $ 1,253.8 $ 1,037.3 $ 912.9 Direct cost of contracts (985.5) (910.1) (807.9) Gross profit 268.3 127.2 105.0 Net earnings $ 92.3 $ 84.3 $ 72.6

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of Long-term Debt	The following table presents certain information regarding the Company’s long-term debt at September 30, 2022 and October 1, 2021 (dollars in thousands): Interest Rate Maturity September 30, 2022 October 1, 2021 Revolving Credit Facility Benchmark + applicable margin (1) (2) March 2024 $ 1,105,294 $ 327,794 2021 Term Loan Facility Benchmark + applicable margin (1) (3) March 2024 923,580 1,081,724 2020 Term Loan Facility Benchmark + applicable margin (1) (4) March 2025 (5) 882,263 988,940 Fixed-rate notes due: Senior Notes, Series A 4.27% May 2025 190,000 190,000 Senior Notes, Series B 4.42% May 2028 180,000 180,000 Senior Notes, Series C 4.52% May 2030 130,000 130,000 Less: Current Portion (4) (50,415) (53,456) Less: Deferred Financing Fees (3,466) (5,069) Total Long-term debt, net $ 3,357,256 $ 2,839,933 (1) During the year ended September 30, 2022, the aggregate principal amounts denominated in British pounds under the Revolving Credit Facility, 2021 Term Loan Facility and 2020 Term Loan Facility transitioned from underlying LIBOR benchmarked rates to SONIA rates. Borrowings denominated in U.S. dollars remained benchmarked to LIBOR rates. (2) Depending on the Company’s Consolidated Leverage Ratio (as defined in the credit agreement governing the Revolving Credit Facility (defined below)), U.S. dollar denominated borrowings under the Revolving Credit Facility bear interest at either a eurocurrency rate plus a margin of between 0.875% and 1.625% or a base rate plus a margin of between 0% and 0.625%.The applicable LIBOR rates, including applicable margins, at September 30, 2022 and October 1, 2021 were approximately 4.08% and 1.45%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.875% and 1.625%. There were no amounts drawn in British pounds as of September 30, 2022. (3) Depending on the Company’s Consolidated Leverage Ratio (as defined in the credit agreement governing the 2021 Term Loan Facility (defined below)), U.S. dollar denominated borrowings under the 2021 Term Loan Facility bear interest at either a eurocurrency rate plus a margin of between 0.875% and 1.625% or a base rate plus a margin of between 0% and 0.625%. The applicable LIBOR rate, including applicable margin, at September 30, 2022 and October 1, 2021was approximately 4.06% and 1.43%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin of between 0.875% and 1.625%, which was approximately 3.60% at September 30, 2022. (4) Depending on the Company’s Consolidated Leverage Ratio (as defined in the credit agreement governing the 2020 Term Loan Facility (defined below)), U.S. dollar denominated borrowings under the 2020 Term Loan Facility bear interest at either a eurocurrency rate plus a margin of between 0.875% and 1.5% or a base rate plus a margin of between 0% and 0.5%. The applicable LIBOR rates, including applicable margins, at September 30, 2022 and October 1, 2021 were approximately 4.49% and 1.45%. Borrowings denominated in British pounds bear interest at an adjusted SONIA rate plus a margin between 0.875% and 1.5%, which was approximately 3.60% at September 30, 2022. (5) The 2020 Term Loan requires quarterly principal repayments of 1.25%, or $9.125 million and £3.125 million, of the aggregate initial principal amount borrowed.
Schedule of Interest Expense	The following table presents the amount of interest paid by the Company during September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 $88,031 $54,860 $58,257

Leases (Tables)

Leases (Tables)	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Schedule of Lease Cost	The components of lease expense (reflected in selling, general and administrative expenses) for th e years ended September 30, 2022, October 1, 2021 and October 2, 2020 were as follows (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Lease cost Operating lease cost $ 151,134 $ 160,026 $ 169,967 Variable lease cost 36,631 31,727 35,083 Sublease income (15,207) (12,359) (14,719) Total lease cost $ 172,558 $ 179,394 $ 190,331 Supplemental information related to the Company's leases for the years ended September 30, 2022 and October 1, 2021 was as follows (in thousands): September 30, 2022 October 1, 2021 Cash paid for amounts included in the measurements of lease liabilities $ 229,275 $ 209,594 Right-of-use assets obtained in exchange for new operating lease liabilities $ 38,110 $ 165,770 Weighted average remaining lease term - operating leases 6.3 years 7 years Weighted average discount rate - operating leases 2.8% 2.6%
Schedule of Operating Lease Maturity	Total remaining lease payments under the Company's leases for each of the succeeding years is as follows (in thousands): Fiscal Year Operating Leases 2023 $ 168,347 2024 149,492 2025 125,494 2026 106,247 2027 86,639 Thereafter 196,628 832,847 Less Interest (75,229) $ 757,618

Employee Stock Purchase and S_2

Employee Stock Purchase and Stock Incentive Plans (Tables)	12 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Employee Stock Ownership Plan (ESOP) Disclosures	The following table summarizes the stock issuance activity under the plans for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Aggregate Purchase Price Paid for Shares Sold (in thousands): $ 38,648 $ 32,149 $ 27,813 Aggregate Number of Shares Sold: 302,429 287,587 333,078
Stock-based Compensation Expense by Type of Award	The following table sets forth certain information about the 1999 Plans: 1999 SIP 1999 ODSP Total Number of shares authorized 29,850,000 1,100,000 30,950,000 Number of remaining shares reserved for issuance at September 30, 2022 4,244,964 242,212 4,487,176 Number of shares relating to outstanding stock options at September 30, 2022 358,224 81,125 439,349 Number of shares available for future awards: At September 30, 2022 3,886,740 161,087 4,047,827 At October 1, 2021 4,166,975 187,554 4,354,529 The following table presents the number and weighted average grant-date fair value of restricted stock and restricted stock units at September 30, 2022: Number of Shares Weighted Average Grant-Date Fair Value Outstanding at October 1, 2021 1,444,231 $ 91.23 Granted 623,323 $ 127.35 Vested (602,793) $ 80.95 Canceled (89,332) $ 113.89 Outstanding at September 30, 2022 1,375,429 $ 110.64
Share-based Compensation Arrangements by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding	The following table presents the fair value of shares (of restricted stock and restricted stock units) vested for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted Stock and Restricted Stock Units (service condition) $ 23,077 $ 20,374 $ 29,209 Restricted Stock Units (service, market, and performance conditions at target) 22,678 26,495 20,998 Total $ 45,755 $ 46,869 $ 50,207
Share-based Compensation, Stock Options, Activity	The following table summarizes the stock option activity for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: Number of Stock Options Weighted Average Outstanding at September 27, 2019 926,606 $ 45.48 Exercised (212,467) $ 44.05 Cancelled or expired (7,650) $ 45.31 Outstanding at October 2, 2020 706,489 $ 45.91 Exercised (130,030) $ 47.07 Cancelled or expired (2,475) $ 45.18 Outstanding at October 1, 2021 573,984 $ 45.65 Granted (1) 150,951 $ 12.79 Exercised (284,502) $ 43.56 Cancelled or expired (1,084) $ 21.34 Outstanding at September 30, 2022 439,349 $ 35.77 (1) Included in the September 30, 2022 amounts are options issued related to a recent business combination with strike prices lower than the then-current share price in order to derive a certain value.
Schedule Of Intrinsic Value Of Options	The following table presents the total intrinsic value of stock options exercised for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 $28,149 $9,693 $9,986
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following table presents certain other information regarding our 1999 SIP and 1999 OSDP for the fiscal years ended September 30, 2022, October 1, 2021 and October 2, 2020: September 30, 2022 October 1, 2021 October 2, 2020 At fiscal year end: Range of exercise prices for options exercisable (1) $5.64–$60.43 $37.03–$60.43 $32.51–$60.43 Number of options exercisable 367,624 573,984 706,489 For the fiscal year: Range of prices relating to options exercised $11.27–$60.43 $32.51-$60.43 $37.03-$60.08 (1) Included in the September 30, 2022 amounts are options issued related to a recent business combination with strike prices lower than the then-current share price in order to derive a certain value.
Schedule Of Information Options Outstanding And Exercisable	The following table presents certain information regarding stock options outstanding and stock options exercisable at September 30, 2022: September 30, 2022 Options Outstanding and Exercisable Range of Exercise Prices Number Weighted Average Remaining Contractual Life (years) Weighted Average Price $32.51 - $37.03 149,328 7.60 $ 12.79 $37.43 - $46.09 178,009 2.82 $ 43.01 $47.11 - $55.13 90,137 0.96 $ 53.53 $60.08 - $80.63 21,875 1.42 $ 60.43 439,349 3.99 $ 35.77
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	The following table presents the number of shares of restricted stock and restricted stock units issued as common stock under the 1999 SIP for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted stock 818 — — Restricted stock units (service condition) 290,582 380,722 351,670 Restricted stock units (service and performance conditions) 176,470 181,132 202,792 The following table presents the number of shares of restricted stock and restricted stock units canceled and withheld for taxes under the 1999 SIP for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted stock — — 34,417 Restricted stock units (service condition) 57,366 201,967 183,099 Restricted stock units (service and performance conditions) 31,966 218,520 160,781 September 30, 2022 Restricted stock 252 Restricted stock units (service condition) 732,945 Restricted stock units (service and performance conditions) 585,099 The following table presents the number of shares of restricted stock and restricted stock units issued under the 1999 ODSP for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Restricted stock units (service condition) 13,785 17,680 18,100 The following table provides the number of shares of restricted stock and restricted stock units outstanding at September 30, 2022 under the 1999 ODSP: September 30, 2022 Restricted stock — Restricted stock units (service condition) 57,133

Savings and Deferred Compensa_2

Savings and Deferred Compensation Plans Savings and Deferred Compensation Plans (Tables)	12 Months Ended
	Sep. 30, 2022
Savings And Deferred Compensation Plans [Abstract]
Schedule of Savings Plans Contributions	The following table presents the Company’s contributions to these savings plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 $ 184,399 $ 132,865 $ 91,833
Schedule of Deferred Compensation Plans Expense	The following table presents the amount charged to expense for the Company’s deferred compensation plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 $ 1,697 $ 2,900 $ 203 The following table presents the amount relating to assets held as deferred compensation arrangement investments for the years ended September 30, 2022 and October 1, 2021 (in thousands): September 30, 2022 October 1, 2021 Deferred compensation arrangement investments $ 165,118 $ 210,223

Pension and Other Postretirem_2

Pension and Other Postretirement Benefit Plans (Tables)	12 Months Ended
	Sep. 30, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Schedule of Change In Plans' Combined Net Benefit Obligations	The following table sets forth the changes in the plans’ combined net benefit obligation (segregated between plans existing within and outside the U.S.) for the years ended September 30, 2022 and October 1, 2021 (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Net benefit obligation at the beginning of the year $ 404,820 $ 437,920 $ 2,375,640 $ 2,388,077 Service cost 236 456 6,480 6,568 Interest cost 10,350 10,221 42,328 38,907 Participants’ contributions — — 249 212 Actuarial gains (1) (85,067) (11,808) (651,798) (140,670) Benefits paid (25,565) (25,582) (74,378) (74,477) Curtailments/settlements/plan amendments (5,271) (6,387) (2,641) (13,932) Acquisition of PA Consulting Plans, net of post-deal transfers (2) — — — 66,065 Effect of exchange rate changes and other, net — — (330,414) 104,890 Net benefit obligation at the end of the year $ 299,503 $ 404,820 $ 1,365,466 $ 2,375,640 (1) Actuarial gains primarily driven by change in discount rates. (2) See note below change in assets table.
Schedule of Change in Combined Fair Value of the Plans' Assets	The following table sets forth the changes in the combined Fair Value of the plans’ assets (segregated between plans existing within and outside the U.S.) for the years ended September 30, 2022 and October 1, 2021 (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Fair value of plan assets at the beginning of the year $ 385,521 $ 382,250 $ 2,203,495 $ 2,043,356 Actual (loss) return on plan assets (68,585) 35,152 (557,972) 60,040 Employer contributions 93 88 33,032 39,085 Participants’ contributions — — 249 212 Gross benefits paid (25,565) (25,582) (74,378) (74,477) Curtailments/settlements/plan amendments (5,271) (6,387) (2,641) (13,932) Acquisition of PA Consulting Plans, net of post-deal transfers — — — 60,160 Effect of exchange rate changes and other, net — — (304,160) 89,051 Fair value of plan assets at the end of the year $ 286,193 $ 385,521 $ 1,297,625 $ 2,203,495
Reconciliation of Combined Funded Status of Plans and Recognized in Consolidated Balance Sheet	The following table reconciles the combined funded statuses of the plans recognized in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Net benefit obligation at the end of the year $ 299,503 $ 404,820 $ 1,365,466 $ 2,375,640 Fair value of plan assets at the end of the year 286,193 385,521 1,297,625 2,203,495 Underfunded amount recognized at the end of the year $ 13,310 $ 19,299 $ 67,841 $ 172,145
Schedule of Accumulated and Projected Benefit Obligations	The following table presents the accumulated benefit obligation at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Accumulated benefit obligation at the end of the year $ 299,347 $ 404,283 $ 1,355,717 $ 2,305,808
Schedule of Amount Recognized in Accompanying Balance Sheets	The following table presents the amounts recognized in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Prepaid benefit cost included in noncurrent assets $ — $ — $ 54,897 $ 48,340 Accrued benefit cost included in current liabilities 83 84 4,359 3,873 Accrued benefit cost included in noncurrent liabilities 13,227 19,215 118,379 216,612 Net amount recognized at the end of the year $ 13,310 $ 19,299 $ 67,841 $ 172,145
Schedule of Pension Plans Recorded In Accumulated Other Comprehensive Loss Not Yet Recognized As Component of Net Periodic Pension Cost	The following table presents certain amounts relating to our plans recorded in accumulated other comprehensive loss that have not yet been recognized as components of net periodic benefit cost at September 30, 2022 and October 1, 2021 (segregated between U.S. and non-U.S. plans) (in thousands): U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Net actuarial loss $ 37,638 $ 39,217 $ 248,716 $ 328,397 Prior service cost 697 1,021 20,344 25,926 Total $ 38,335 $ 40,238 $ 269,060 $ 354,323
Schedule of Accumulated Comprehensive Income Amortized Against Earnings In Next Year	The following table presents the amount of accumulated comprehensive income that will be amortized against earnings as part of our net periodic benefit cost in fiscal 2023 based on 2022 exchange rates (segregated between U.S. and non-U.S. plans) (in thousands): U.S. Plans Non-U.S. Plans Unrecognized net actuarial (gain) or loss $ (1,770) $ 5,310 Unrecognized prior service cost 431 1,246 Accumulated comprehensive (gain) or loss to be recorded against earnings $ (1,339) $ 6,556
Schedule of Weighted Average Measurement Of Assets And Liabilities	The plans’ weighted average asset allocations at September 30, 2022 and October 1, 2021 (the measurement dates used in valuing the plans’ assets and liabilities) were as follows: U.S. Plans Non-U.S. Plans September 30, 2022 October 1, 2021 September 30, 2022 October 1, 2021 Equity securities 2 % 3 % 15 % 15 % Debt securities 66 % 58 % 49 % 54 % Real estate investments — % — % 11 % 9 % Other 32 % 39 % 25 % 22 %
Anticipated Cash Contributions	The following table presents the amount of cash contributions we anticipate making into the plans during fiscal 2023 (in thousands): U.S. Plans Non-U.S. Plans Anticipated cash contributions $ — $ 26,651
Schedule of Expected Payments to Participants in Pension Plan	The following table presents the total benefit payments expected to be paid to plan participants during each of the next five fiscal years, and in total for the five years thereafter (in thousands): U.S. Plans Non-U.S. Pans 2023 $ 30,869 $ 62,922 2024 28,884 67,058 2025 28,088 68,129 2026 27,377 72,069 2027 26,139 78,254 For the periods 2028 through 2032 115,872 351,748
Schedule of Contribution to Multiemployer Pension Plans	The following table presents the Company’s contributions to these multiemployer plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Europe $ 1,548 $ 1,713 $ 1,922 United States 11,038 11,316 6,637 Contributions to multiemployer pension plans $ 12,586 $ 13,029 $ 8,559
U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Schedule of Significant Actuarial Assumptions In Determining Funded Status Plans	The following table presents the significant actuarial assumptions used in determining the funded statuses and the following year's benefit cost of the Company’s U.S. plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Discount rates 4.2% to 5.5% 2.3% to 2.8% 2.0% to 2.7% Rates of compensation increases 3.5% 3.5% 3.5% Expected long-term rates of return on assets 5.5% to 6.4% 4.7% to 5.1% 4.6% to 4.7%
Schedule of Pension Plans Recognized In Accumulated Other Comprehensive Loss	The following table presents certain amounts relating to our U.S. plans recognized in accumulated other comprehensive (gain) loss at September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Arising during the period: Net actuarial loss (gain) $ 578 $ (25,109) $ (900) Prior service cost — — 1,589 Total 578 (25,109) 689 Reclassification adjustments: Net actuarial losses (2,157) (3,204) (2,653) Prior service (benefit) (324) (325) (244) Total (2,481) (3,529) (2,897) Total $ (1,903) $ (28,638) $ (2,208)
Schedule of Fair Value of Pension Plan Assets	The following table presents the Fair Value of the Company’s Domestic U.S. plan assets at September 30, 2022, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): September 30, 2022 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Equities $ 6,708 $ — $ — $ — $ 6,708 Domestic bonds 64,396 106,961 — — 171,357 Overseas bonds — 15,200 — — 15,200 Cash and equivalents 19,025 — — — 19,025 Mutual funds 73,903 — — — 73,903 Total $ 164,032 $ 122,161 $ — $ — $ 286,193 The following table presents the Fair Value of the Company’s U.S. plan assets at October 1, 2021, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): October 1, 2021 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Equities $ 12,331 $ — $ — $ — $ 12,331 Domestic bonds 74,456 132,138 — — 206,594 Overseas bonds — 15,730 — — 15,730 Cash and equivalents 22,634 — — — 22,634 Mutual funds 128,232 — — — 128,232 Total $ 237,653 $ 147,868 $ — $ — $ 385,521
Schedule of Components of Net Periodic Pension Cost Recognized	The following table presents the components of net periodic benefit cost for the Company’s U.S. plans recognized in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Service cost $ 236 $ 456 $ 409 Interest cost 10,350 10,221 12,673 Expected return on plan assets (16,933) (15,932) (17,670) Actuarial loss 2,861 4,249 3,518 Prior service cost 430 431 323 Net pension cost, before special items $ (3,056) $ (575) $ (747) Curtailment expense/Settlement (gain) loss (206) (64) 3,436 Total net periodic pension (income) cost recognized $ (3,262) $ (639) $ 2,689
Non-U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Schedule of Significant Actuarial Assumptions In Determining Funded Status Plans	The following table presents the significant actuarial assumptions used in determining the funded statuses and the following year's benefit cost of the Company’s non-U.S. plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020: For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Discount rates 2.4% to 7.4% 0.6% to 6.6% 0.4% to 6.6% Rates of compensation increases 2.5% to 9.0% 2.4% to 7.5% 2.7% to 7.5% Expected long-term rates of return on assets 3.3% to 7.5% 2.0% to 7.0% 1.8% to 7.0%
Schedule of Pension Plans Recognized In Accumulated Other Comprehensive Loss	The following table presents certain amounts relating to our non-U.S. plans recognized in accumulated other comprehensive (gain) loss at September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Arising during the period: Net actuarial (gain) loss $ (78,705) $ (65,547) $ 71,676 Prior service cost — — — Total (78,705) (65,547) 71,676 Reclassification adjustments: Net actuarial losses (5,492) (8,761) (6,322) Prior service (benefit) (1,066) (1,219) (1,169) Total (6,558) (9,980) (7,491) Total $ (85,263) $ (75,527) $ 64,185
Schedule of Fair Value of Pension Plan Assets	The following table presents the Fair Value of the Company’s non-U.S. plan assets at September 30, 2022, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): September 30, 2022 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Domestic equities $ — $ 42,655 $ — $ 1,539 $ 44,194 Overseas equities — 74,056 — 76,813 150,869 Domestic bonds — 38,448 — — 38,448 Overseas bonds — 532,697 — 64,897 597,594 Cash and equivalents 9,667 1,835 — — 11,502 Real estate — 4,076 102,868 36,959 143,903 Insurance contracts — — 80,231 80,231 Hedge funds — — 138,603 11,568 150,171 Mutual funds — 80,713 — — 80,713 Total $ 9,667 $ 774,480 $ 321,702 $ 191,776 $ 1,297,625 The following table presents the Fair Value of the Company’s non-U.S. plan assets at October 1, 2021, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands): October 1, 2021 Fair Value, Determined Using Fair Value Measurement Inputs Level 1 Level 2 Level 3 Investments measured at Net Asset Value Total Domestic equities $ — $ 86,117 $ — $ 2,662 $ 88,779 Overseas equities — 142,243 — 101,071 243,314 Domestic bonds — 48,119 — — 48,119 Overseas bonds — 1,049,585 — 56,616 1,106,201 Cash and equivalents 27,579 1,322 — — 28,901 Real estate — 17,319 116,936 53,434 187,689 Insurance contracts — — 133,802 — 133,802 Hedge funds — — 231,319 16,020 247,339 Mutual funds — 119,351 — — 119,351 Total $ 27,579 $ 1,464,056 $ 482,057 $ 229,803 $ 2,203,495
Summary of Changes in the Fair Value of Plans Level 3 Assets	The following table summarizes the changes in the Fair Value of the Company’s non-U.S. Pension Plans’ Level 3 assets for the years ended September 30, 2022 and October 1, 2021 (in thousands): Real Estate Insurance Contracts Hedge Funds Balance at Balance at October 2, 2020 $ 105,422 $ 67,709 $ 171,730 Purchases, sales, and settlements 6,288 2,413 51,513 Realized and unrealized gains 398 1,448 864 Acquisition of PA Consulting Plans, net of post-deal transfers — 60,160 — Effect of exchange rate changes 4,828 2,072 7,212 Balance at October 1, 2021 $ 116,936 $ 133,802 $ 231,319 Purchases, sales, and settlements (8,686) (6,312) (11,553) Realized and unrealized losses 14,701 (24,770) (42,964) Effect of exchange rate changes (20,083) (22,489) (38,199) Balance at September 30, 2022 $ 102,868 $ 80,231 $ 138,603
Schedule of Components of Net Periodic Pension Cost Recognized	The following table presents the components of net periodic benefit cost for the Company’s Non-U.S. plans recognized in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Service cost $ 6,480 $ 6,568 $ 5,710 Interest cost 42,328 38,907 39,469 Expected return on plan assets (71,875) (90,346) (93,407) Actuarial loss 7,147 10,834 7,578 Prior service cost 1,421 1,519 1,405 Net pension cost, before special items $ (14,499) $ (32,518) $ (39,245) Curtailment expense/Settlement loss 329 2,847 1,341 Total net periodic pension (income) cost recognized $ (14,170) $ (29,671) $ (37,904)

PA Consulting Business Combin_2

PA Consulting Business Combinations (Tables)	12 Months Ended
	Sep. 30, 2022
Business Acquisition [Line Items]
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The following summarizes the fair values of StreetLight's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 7.3 Receivables 5.2 Property, equipment and improvements, net 0.1 Goodwill 116.5 Identifiable intangible assets 105.1 Prepaid expenses and other current assets 2.0 Total Assets $ 236.2 Liabilities Accounts payable, accrued expenses and other current liabilities $ 23.1 Other long term liabilities 16.2 Total Liabilities 39.3 Net assets acquired $ 196.9 Assets Cash and cash equivalents $ 5.1 Receivables 7.7 Property, equipment and improvements, net 0.8 Goodwill 195.8 Identifiable intangible assets 51.1 Prepaid expenses and other current assets 3.2 Total Assets $ 263.7 Liabilities Accounts payable, accrued expenses and other current liabilities $ 19.5 Other long term liabilities 8.8 Total Liabilities 28.3 Net assets acquired $ 235.4
PA Consulting Group Limited
Business Acquisition [Line Items]
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The following summarizes the fair values of PA Consulting's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 134.9 Receivables 166.5 Property, equipment and improvements, net 40.5 Goodwill 1,454.0 Identifiable intangible assets 1,004.2 Prepaid expenses and other current assets 9.5 Miscellaneous long term assets 84.0 Total Assets $ 2,893.6 Liabilities Accounts payable $ 6.5 Accrued liabilities and other current liabilities 354.8 Other long term liabilities 248.0 Total Liabilities 609.3 Redeemable Noncontrolling interests 582.4 Net assets acquired $ 1,701.9
Summary of Unaudited Proforma Operating Results	These pro forma operating results are presented for illustrative purposes only and are not indicative of the operating results that would have been achieved had the related events occurred (in millions, except per share data): For the Years Ended October 1, 2021 October 2, 2020 Revenues $ 14,504.3 $ 14,348.1 Net earnings of the Group $ 695.1 $ 83.5 Net earnings attributable to Jacobs $ 548.0 $ 138.6 Net earnings attributable to Jacobs per share: Basic earnings per share $ 4.21 $ 0.62 Diluted earnings per share $ 4.17 $ 0.61
Redeemable Noncontrolling Interest	Changes in the Company's redeemable noncontrolling interests d uring the fiscal year ended September 30, 2022 are as follows (in thousands): Total Balance at October 1, 2021 $ 657,722 Accrued Preferred Dividend to Preference Shareholders 67,598 Attribution of Preferred Dividend to Common Shareholders (67,598) Net earnings attributable to redeemable noncontrolling interest to Common Shareholders 34,585 Redeemable Noncontrolling interests redemption value adjustment 27,657 Repurchase of redeemable noncontrolling interests (53,834) Issuance of redeemable noncontrolling interests 54,884 Cumulative translation adjustment and other (88,492) Balance at September 30, 2022 $ 632,522

Other Business Combinations (Ta

Other Business Combinations (Tables)	12 Months Ended
	Sep. 30, 2022
Business Acquisition [Line Items]
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The following summarizes the fair values of StreetLight's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 7.3 Receivables 5.2 Property, equipment and improvements, net 0.1 Goodwill 116.5 Identifiable intangible assets 105.1 Prepaid expenses and other current assets 2.0 Total Assets $ 236.2 Liabilities Accounts payable, accrued expenses and other current liabilities $ 23.1 Other long term liabilities 16.2 Total Liabilities 39.3 Net assets acquired $ 196.9 Assets Cash and cash equivalents $ 5.1 Receivables 7.7 Property, equipment and improvements, net 0.8 Goodwill 195.8 Identifiable intangible assets 51.1 Prepaid expenses and other current assets 3.2 Total Assets $ 263.7 Liabilities Accounts payable, accrued expenses and other current liabilities $ 19.5 Other long term liabilities 8.8 Total Liabilities 28.3 Net assets acquired $ 235.4
Buffalo Group
Business Acquisition [Line Items]
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The following summarizes the fair values of The Buffalo Group's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 8.4 Receivables 19.2 Property, equipment and improvements, net 2.3 Goodwill 130.7 Identifiable intangible assets 74.0 Prepaid expenses and other current assets 6.2 Total Assets $ 240.8 Liabilities Accounts payable, accrued expenses and other current liabilities $ 46.9 Other long term liabilities 3.8 Total Liabilities 50.7 Net assets acquired $ 190.1
Wood Group
Business Acquisition [Line Items]
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The following summarizes the fair values of John Wood Group's assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 24.3 Receivables 74.2 Other current assets 3.8 Property, equipment and improvements, net 8.3 Goodwill 207.8 Identifiable intangible assets 80.0 Miscellaneous 19.4 Total Assets $ 417.8 Liabilities Accounts payable, accrued expenses and other current liabilities $ 71.4 Long term liabilities 28.5 Total Liabilities 99.9 Net assets acquired $ 317.9

Restructuring and Other Charg_2

Restructuring and Other Charges (Tables)	12 Months Ended
	Sep. 30, 2022
Restructuring and Related Activities [Abstract]
Summary of Restructuring and Other Charges Impacts on Reportable Segment Income by Line of Business	The following table summarizes the impacts of the Restructuring and other charges by operating segment in connection with the CH2M, KeyW, John Wood Group nuclear business and Buffalo Group, BlackLynx and StreetLight acquisitions and the PA Consulting investment, the ECR sale, the Company's transformation initiatives relating to real estate and other staffing programs and the impairment and final exit activities of the AWE ML investment for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Critical Mission Solutions $ 5,626 $ 5,079 $ 24,083 People & Places Solutions 64,204 7,077 170,631 PA Consulting 4,253 15,566 — Corporate 86,980 71,868 129,469 Total 161,063 99,590 324,183 Amounts included in: Operating profit (mainly Selling, General and Administrative costs (“SG&A") (1) 173,555 61,042 322,082 Other (Income) Expense, net (2) (12,492) 38,548 2,101 $ 161,063 $ 99,590 $ 324,183 (1) For the year ended September 30, 2022, amounts include $91.3 million pre-tax related to the final settlement of the Legacy CH2M Matter (as defined in Note 19 - Contractual Guarantees, Litigation, Investigations and Insurance ), net of previously recorded reserves, approximately $27 million in third party recoveries was recorded as receivables reducing SG&A and approximately $78.3 million in charges associated with real estate related impairments, the majority of which related to People and Places Solutions. Included in the years ended October 1, 2021 and October 2, 2020 were $2.4 million and $161.4 million in charges associated mainly with real estate impairments. (2) The year ended September 30, 2022 includes gains of $(8.7) million related to lease terminations. The year ended October 1, 2021 included $38.5 million in charges related to the impairment of our AWE ML investment. See Note 20 - Segment Information .
Schedule of Restructuring and Other Activities	The activity in the Company’s accrual for the Restructuring and other charges including the program activities described above for the year ended September 30, 2022 is as follows (in thousands): Balance at October 1, 2021 $ 14,031 Net Charges (1) 25,824 Payments & Usage (35,718) Balance at September 30, 2022 $ 4,137 (1) Exclude s $135.3 million in other net charges mainly comprised of $91.3 million pre-tax in charges and payments for the final settlement of the Legacy CH2M Matter (net of previously recorded reserves), approximately $27 million in third party recoveries was recorded as receivables reducing SG&A and $71.0 million associated mainly with real estate related impairments and other transformation activities described above during the year ended September 30, 2022 .
Summary of Restructuring and Other Activities by Major Type of Costs	The following table summarizes the Restructuring and other charges by major type of costs for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands): September 30, 2022 October 1, 2021 October 2, 2020 Lease Abandonments and Impairments (1) $ 69,802 $ 4,282 $ 151,150 Voluntary and Involuntary Terminations 5,635 15,773 53,484 Outside Services 22,340 35,210 88,476 Other (2) 63,286 44,325 31,073 Total $ 161,063 $ 99,590 $ 324,183 (1) The years ended September 30, 2022 and October 2, 2020 include approximately $78.3 million and $161.4 million, respectively, in charges associated with real estate related impairments reflected in Lease Abandonments and Impairments, offset by the gain of $(8.7) million related to lease terminations for the year ended September 30, 2022 . (2) Amounts in the year ended September 30, 2022 are mainly comprised of $91.3 million in other charges related to the final pre-tax settlement of the Legacy CH2M Matter, net of previously recorded reserves and approximately $27 million in third party recoveries was recorded as receivables reducing SG&A. Amounts in the year ended October 1, 2021 are mainly comprised of $38.5 million in charges
Summary of Cumulative Amounts Incurred for Restructuring and Other Activities Costs	Cumulative amounts since 2017 incurred to date under our various restructuring and other activities described above by each major type of cost as of September 30, 2022 are as follows (in thousands): Lease Abandonments and Impairments $ 387,601 Voluntary and Involuntary Terminations 150,377 Outside Services 316,334 Other 208,265 Total $ 1,062,577

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Schedule of Total Revenues, Segment Operating Profit and Total Asset for Reporting Segment	The following tables present total revenues and segment operating profit from continuing operations for each reportable segment (in thousands) and includes a reconciliation of segment operating profit to total U.S. GAAP operating profit by including certain corporate-level expenses, Restructuring and other charges (as defined in Note 17 -Restructuring and Other Charges ) and transaction and integration costs (in thousands). For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Revenues from External Customers: Critical Mission Solutions $ 5,233,629 $ 5,087,052 $ 4,965,952 People & Places Solutions 8,569,900 8,378,179 8,601,023 PA Consulting 1,119,296 627,401 — Total $ 14,922,825 $ 14,092,632 $ 13,566,975 For the Years Ended September 30, 2022 October 1, 2021 October 2, 2020 Segment Operating Profit: Critical Mission Solutions $ 424,385 $ 447,161 $ 372,070 People & Places Solutions (1) 823,564 780,380 740,707 PA Consulting 232,225 151,071 — Total Segment Operating Profit 1,480,174 1,378,612 1,112,777 Other Corporate Expenses (2) (364,440) (340,129) (249,391) Restructuring, Transaction and Other Charges (3) (197,884) (350,394) (327,413) Total U.S. GAAP Operating Profit 917,850 688,089 535,973 Total Other (Expense) Income, net (4) (41,503) 7,513 (94,770) Earnings from Continuing Operations Before Taxes $ 876,347 $ 695,602 $ 441,203 (1) Includes $19.5 million, net, in charges related to a legal settlement for the year ended October 1, 2021. (2) Other corporate expenses include intangibles amortization of $198.6 million, $149.8 million and $90.6 million for the years ended September 30, 2022, October 1, 2021 and October 2, 2020, respectively, with the comparative increase mainly attributable to higher amortization from the PA Consulting investment. (3) Included in the year ended September 30, 2022 is $91.3 million pre-tax re lated to the final settlement of the Legacy CH2M Matter, net of previously recorded reserve s, approximately $27 million in third party recoveries was recorded as receivables reducing SG&A and $78.3 million of r eal estate impairment charges. Included in the year ended October 1, 2021 is $297.8 million of costs incurred in connection with the investment in PA Consulting, in part classified as compensation costs. Included in the years ended October 1, 2021 and October 2, 2020 were $2.4 million and $161.4 million in charges associated mainly with real estate impairments. (4) The year ended September 30, 2022 included a $13.9 million gain related to a cost method investment sold during the period and a gain of $8.7 million related to lease terminations. The years ended October 1, 2021 and October 2, 2020 include $34.7 million and $(74.3) million in fair value adjustments related to our investment in Worley stock (net of Worley stock div idends) and certain foreign currency r evaluations relating to ECR sale proceeds, respectively . The year ended October 1, 2021 includes $(38.5) million related to impairment of our AWE Management Ltd. investment and $49.6 million in fair value adjustments related to our investment in C3 stock. The investments in Worley and C3 were sold in fiscal 2021 and therefore there are no comparable amounts in the current fiscal year. Additionally, the increase in net interest expense year over year is primarily due to the higher levels of debt outstanding due to the funding of the StreetLight and BlackLynx acquisitions and increased borrowings associated with the payment of the Legacy CH2M Matter settlement in the current year, in addition to higher interest rates.

Description of Business and B_3

Description of Business and Basis of Presentation - Schedule of Percentage Revenues Realized by Contract (Details)	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cost-reimbursable	74%	76%	76%
Fixed-price	26%	24%	24%

Description of Business and B_4

Description of Business and Basis of Presentation - Basis of Presentation, Acquisition Narrative (Details) £ in Millions, shares in Millions, $ in Millions								3 Months Ended	12 Months Ended
	Feb. 04, 2022 USD ($)	Nov. 19, 2021 USD ($)	Mar. 02, 2021 USD ($)	Nov. 24, 2020 USD ($)	Mar. 06, 2020 USD ($)	Mar. 06, 2020 GBP (£)	Apr. 26, 2019 USD ($) shares	Sep. 30, 2022 USD ($)	Sep. 30, 2022 operatingSegment	Sep. 30, 2022 segment
Business Acquisition [Line Items]
Number of operating and reporting segments									3	3
Worley Stock
Business Acquisition [Line Items]
Equity instrument consideration, shares | shares							58.2
ECR Business
Business Acquisition [Line Items]
Consideration transferred							$ 3,400
Business combination consideration paid in cash							$ 2,800
PA Consulting Group Limited
Business Acquisition [Line Items]
Percentage of outstanding shares of common and preferred stock acquired			65%
Consideration transferred			$ 1,700
Compensation expense								$ 261
Redeemable noncontrolling interests had a fair value			582.4
Business combination, cash acquired			$ 134.9
Buffalo Group
Business Acquisition [Line Items]
Consideration transferred				$ 190.1
Business combination consideration paid in cash				182.4
Contingent consideration				7.7
Long term liabilities				7.7
Business combination, cash acquired				$ 8.4
John Wood Group
Business Acquisition [Line Items]
Enterprise value on debt-free, cash-free basis (USD, GBP)					$ 317.9	£ 246
Business combination, cash acquired					$ 24.3
StreetLightData, Inc.
Business Acquisition [Line Items]
Business combination consideration paid in cash	$ 190.8
Business combination, cash acquired	7.3
Business combination consideration equity issued	0.9
Money stock options	5.2
Transferred liabilities incurred	$ 1
BlackLynx
Business Acquisition [Line Items]
Business combination consideration paid in cash		$ 235.4
Long term liabilities		5.3
Business combination, cash acquired		$ 5.1

Significant Accounting Polici_3

Significant Accounting Policies - Narrative (Details)		12 Months Ended
	Mar. 02, 2021	Sep. 30, 2022
PA Consulting Employees
Significant Accounting Policies [Line Items]
Ownership interest of employees	35%
Preferred stock cumulative dividend rate	12%
Preferred stock redemption period	5 years
Minimum
Significant Accounting Policies [Line Items]
Term of lease contract		1 year
Minimum | Buildings
Significant Accounting Policies [Line Items]
Estimated useful life of assets		20 years
Minimum | Equipment
Significant Accounting Policies [Line Items]
Estimated useful life of assets		3 years
Minimum | Leasehold improvements
Significant Accounting Policies [Line Items]
Estimated useful life of assets		4 years
Maximum
Significant Accounting Policies [Line Items]
Term of lease contract		13 years
Maximum | Buildings
Significant Accounting Policies [Line Items]
Estimated useful life of assets		40 years
Maximum | Equipment
Significant Accounting Policies [Line Items]
Estimated useful life of assets		10 years
Maximum | Leasehold improvements
Significant Accounting Policies [Line Items]
Estimated useful life of assets		10 years

Revenue Accounting for Contra_3

Revenue Accounting for Contracts (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 14,922,825	$ 14,092,632	$ 13,566,975
Contract liability	$ 422,000	$ 405,000
U.S. Federal Government and it's Agencies | Revenue Benchmark | Customer Concentration Risk
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Concentration risk, percentage	31%	33%	33%
U.S. Plans
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 9,875,252	$ 9,671,281	$ 10,158,508
Europe
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	3,488,317	3,140,114	2,253,284
Canada
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	269,386	227,692	227,067
Asia
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	140,663	114,118	117,698
India
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	114,235	70,772	50,618
Australia and New Zealand
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	706,283	647,866	537,076
South America and Mexico
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	0	0	11
Middle East and Africa
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 328,689	$ 220,789	$ 222,713

Revenue Accounting for Contra_4

Revenue Accounting for Contracts - Narrative (Details) $ in Billions	Sep. 30, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 15
Remaining performance obligation, percentage	52%
Remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	48%
Remaining performance obligation, expected timing of satisfaction, period

Earnings Per Share and Certai_3

Earnings Per Share and Certain Related Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Numerator for Basic and Diluted EPS:
Net earnings attributable to Jacobs from continuing operations	$ 644,071	$ 467,022	$ 353,861
Preferred Redeemable Noncontrolling interests redemption value adjustment (See Note 14- PA Consulting Business Combination)	0	57,307	0
Net earnings from continuing operations allocated to participating securities	0	0	(72)
Net earnings from continuing operations allocated to common stock for EPS calculation	644,071	409,715	353,789
Net earnings attributable to Jacobs from discontinued operations	(32)	10,008	137,984
Net earnings from discontinued operations allocated to participating securities	0	0	(28)
Net earnings from discontinued operations allocated to common stock for EPS calculation	(32)	10,008	137,956
Net earnings allocated to common stock for EPS calculation	$ 644,039	$ 419,723	$ 491,745
Denominator for Basic and Diluted EPS:
Weighted average basic shares (in shares)	128,665	130,194	131,541
Shares allocated to participating securities (in shares)	0	0	(27)
Shares used for calculating basic EPS attributable to common stock (in shares)	128,665	130,194	131,514
Effect of dilutive securities:
Stock compensation plans (in shares)	780	1,080	1,207
Shares used for calculating diluted EPS attributable to common stock (in shares)	129,445	131,274	132,721
Earnings Per Share, Basic [Abstract]
Basic Net Earnings from Continuing Operations Per Share (in dollars per share)	$ 5.01	$ 3.15	$ 2.69
Basic Net Earnings from Discontinued Operations Per Share (in dollars per share)	0	0.08	1.05
Basic Earnings Per Share (in dollars per share)	5.01	3.22	3.74
Earnings Per Share, Diluted [Abstract]
Diluted Net Earnings from Continuing Operations Per Share (in dollars per share)	4.98	3.12	2.67
Diluted Net Earnings from Discontinued Operations Per Share (in dollars per share)	0	0.08	1.04
Diluted Earnings Per Share (in dollars per share)	4.98	3.20	$ 3.71
Share Repurchases
Common stock, par value (in dollars per share)	1	1
Preferred stock, par value (in dollars per share)	$ 1	$ 1

Earnings Per Share and Certai_4

Earnings Per Share and Certain Related Information - Narrative (Details)	Sep. 15, 2022 $ / shares	Jul. 13, 2022 $ / shares	Apr. 28, 2022 $ / shares	Jan. 26, 2022 $ / shares	Sep. 23, 2021 $ / shares	Jul. 14, 2021 $ / shares	Apr. 22, 2021 $ / shares	Jan. 27, 2021 $ / shares	Sep. 30, 2022 USD ($) case	Jan. 16, 2022 USD ($)	Jan. 16, 2020 USD ($)
Class of Stock [Line Items]
Number of classes of stock authorized | case									2
Dividends declared (in dollars per share) | $ / shares	$ 0.23	$ 0.23	$ 0.23	$ 0.23	$ 0.21	$ 0.21	$ 0.21	$ 0.21
2019 Stock Repurchase Program
Class of Stock [Line Items]
Amount authorized to be repurchased										$ 342,054
2020 Stock Repurchase Program
Class of Stock [Line Items]
Amount authorized to be repurchased											$ 1,000,000,000
Remaining authorized repurchase amount									$ 501,000,000
Accelerated Share Repurchase Program
Class of Stock [Line Items]
Amount authorized to be repurchased									$ 250,000,000

Earnings Per Share and Certai_5

Earnings Per Share and Certain Related Information - Share Repurchases (Details) - 2019 and 2020 Share Repurchase Program	12 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Class of Stock [Line Items]
Amount authorized to be repurchased | $	$ 1,000,000,000
Average price per share (in dollars per share) | $ / shares	$ 133.05
Shares Repurchased (in shares)	2,472,728,000
Number of shares repurchased (in shares)	2,472,728,000

Earnings Per Share and Certai_6

Earnings Per Share and Certain Related Information - Dividends (Details) - $ / shares	Oct. 28, 2022	Sep. 15, 2022	Aug. 26, 2022	Jul. 13, 2022	Jun. 24, 2022	Apr. 28, 2022	Mar. 25, 2022	Jan. 26, 2022	Oct. 29, 2021	Sep. 23, 2021	Aug. 27, 2021	Jul. 14, 2021	Jun. 25, 2021	Apr. 22, 2021	Mar. 26, 2021	Jan. 27, 2021
Class of Stock [Line Items]
Dividends declared (in dollars per share)		$ 0.23		$ 0.23		$ 0.23		$ 0.23		$ 0.21		$ 0.21		$ 0.21		$ 0.21
Dividends paid (in dollars per share)			$ 0.23		$ 0.23		$ 0.23		$ 0.21		$ 0.21		$ 0.21		$ 0.21
Subsequent Event
Class of Stock [Line Items]
Dividends paid (in dollars per share)	$ 0.23

Goodwill and Intangibles - Sche

Goodwill and Intangibles - Schedule of Carrying Value of Goodwill by Reportable Segment Appearing in Accompanying Consolidated Balance Sheets (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($)
Goodwill [Roll Forward]
Balance October 2, 2020	$ 7,197,000
Acquired	329,526
Post-Acquisition Adjustments	5,720
Foreign currency translation and other	(347,588)
Balance October 1, 2021	7,184,658
Critical Mission Solutions
Goodwill [Roll Forward]
Balance October 2, 2020	2,550,631
Acquired	195,756
Post-Acquisition Adjustments	0
Foreign currency translation and other	(30,194)
Balance October 1, 2021	2,716,193
People & Places Solutions
Goodwill [Roll Forward]
Balance October 2, 2020	3,240,783
Acquired	116,525
Post-Acquisition Adjustments	0
Foreign currency translation and other	(47,995)
Balance October 1, 2021	3,309,313
PA Consulting
Goodwill [Roll Forward]
Balance October 2, 2020	1,405,586
Acquired	17,245
Post-Acquisition Adjustments	5,720
Foreign currency translation and other	(269,399)
Balance October 1, 2021	$ 1,159,152

Goodwill and Intangibles - Sc_2

Goodwill and Intangibles - Schedule of Acquired Intangibles in Accompanying Consolidated Balance Sheets (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($)
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 1,565,758
Acquired	163,919
Amortization	(198,602)
Foreign currency translation and other	(137,023)
Ending balance	$ 1,394,052
Weighted Average Amortization Period (years)	9 years
Customer Relationships, Contracts and Backlog
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 1,309,061
Acquired	101,527
Amortization	(175,592)
Foreign currency translation and other	(98,558)
Ending balance	$ 1,136,438
Weighted Average Amortization Period (years)	7 years
Developed Technology
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 40,020
Acquired	62,000
Amortization	(12,055)
Foreign currency translation and other	(1,034)
Ending balance	$ 88,931
Weighted Average Amortization Period (years)	7 years
Trade Names
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 216,677
Acquired	392
Amortization	(10,955)
Foreign currency translation and other	(37,431)
Ending balance	$ 168,683
Weighted Average Amortization Period (years)	18 years

Goodwill and Intangibles - Sc_3

Goodwill and Intangibles - Schedule of Estimated Amortization Expense of Intangible Assets (Details) $ in Millions	Sep. 30, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2023	$ 194.8
2024	194.4
2025	194
2026	171.3
2027	140.1
Thereafter	499.5
Total	$ 1,394.1

Other Financial Information - C

Other Financial Information - Components of Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Components of receivables:
Amounts billed, net	$ 1,400,088	$ 1,278,087
Unbilled receivables and other	1,523,249	1,343,588
Contract assets	482,044	479,743
Total receivables and contract assets, net	3,405,381	3,101,418
Other information about receivables:
Amounts due from the United States federal government included above, net of contract liabilities	$ 749,323	$ 563,009

Other Financial Information - P

Other Financial Information - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	$ 904,594	$ 862,804
Accumulated depreciation and amortization	(557,918)	(509,687)
Property, Equipment and Improvements, net	346,676	353,117
Land
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	478	970
Buildings
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	46,244	52,822
Equipment
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	643,805	586,302
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	179,187	201,522
Construction in progress
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	$ 34,880	$ 21,188

Other Financial Information -_2

Other Financial Information - Property, Plant and Equipment by Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Property, Plant and Equipment [Line Items]
Long-Lived Assets	$ 346,676	$ 353,117
U.S. Plans
Property, Plant and Equipment [Line Items]
Long-Lived Assets	226,639	229,752
Europe
Property, Plant and Equipment [Line Items]
Long-Lived Assets	87,331	95,746
Canada
Property, Plant and Equipment [Line Items]
Long-Lived Assets	5,210	2,076
Asia
Property, Plant and Equipment [Line Items]
Long-Lived Assets	2,578	2,170
India
Property, Plant and Equipment [Line Items]
Long-Lived Assets	9,659	11,545
Australia and New Zealand
Property, Plant and Equipment [Line Items]
Long-Lived Assets	13,211	10,401
Middle East and Africa
Property, Plant and Equipment [Line Items]
Long-Lived Assets	$ 2,048	$ 1,427

Other Financial Information -_3

Other Financial Information - Components of Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Other Financial Information [Abstract]
Accrued payroll and related liabilities	$ 947,547	$ 1,042,265
Project-related accruals	28,178	56,083
Non project-related accruals and other	279,062	239,851
Insurance liabilities	63,183	73,016
Sales and other similar taxes	93,500	94,393
Dividends payable	30,292	27,951
Total	$ 1,441,762	$ 1,533,559

Other Financial Information - A

Other Financial Information - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 5,940,041
Other comprehensive income (loss)	(180,688)	$ 138,615	$ (16,245)
Ending balance	6,060,056	5,940,041
Foreign currency translation adjustment	144,300	(900)
Interest rate and cross currency swaps to be reclassified during the next 12 months	21,000
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(794,442)	(933,057)
Other comprehensive income (loss)	(183,211)	121,420
Reclassifications from other comprehensive income (loss)	(2,523)	(17,195)
Ending balance	(975,130)	(794,442)	(933,057)
Change in Pension and Retiree Medical Plan Liabilities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(394,561)	(498,726)
Other comprehensive income (loss)	87,034	94,606
Reclassifications from other comprehensive income (loss)	132	9,559
Ending balance	(307,395)	(394,561)	(498,726)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(407,240)	(419,715)
Other comprehensive income (loss)	(378,800)	12,475
Reclassifications from other comprehensive income (loss)	0	0
Ending balance	(786,040)	(407,240)	(419,715)
Gain/(Loss) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	7,359	(14,616)
Other comprehensive income (loss)	108,555	14,339
Reclassifications from other comprehensive income (loss)	2,391	7,636
Ending balance	$ 118,305	$ 7,359	$ (14,616)

Income Taxes - Consolidated Inc

Income Taxes - Consolidated Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Current income tax (benefit) expense from continuing operations:
Federal	$ (35,291)	$ 91,313	$ (37,030)
State	4,526	30,886	(5,021)
Foreign	79,822	38,959	41,616
Total current tax expense from continuing operations	49,057	161,158	(435)
Deferred income tax expense (benefit) from continuing operations:
Federal	56,526	35,109	53,485
State	17,178	21,826	7,133
Foreign	38,142	56,688	(4,863)
Total deferred tax expense from continuing operations	111,846	113,623	55,755
Consolidated income tax expense from continuing operations	$ 160,903	$ 274,781	$ 55,320

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Obligations relating to:
Other employee benefit plans	$ 138,897	$ 156,931
Net operating losses	132,999	197,929
Foreign tax credit	83,697	87,689
Contract revenues and costs	0	81,633
Lease liability	138,635	155,064
Unrealized foreign exchange loss	46,005	0
Other	13,005	19,689
Valuation allowance	(113,483)	(188,662)
Gross deferred tax assets	439,755	510,273
Deferred tax liabilities:
Contract revenues and costs	(6,007)	0
Depreciation and amortization	(431,946)	(436,324)
Lease right of use asset	(71,658)	(93,338)
Partnership investment	(52,787)	(72,560)
Hedge Investments	(38,994)	(13,754)
Unrealized Foreign Exchange Gain	(45,754)	0
Other	(30,206)	(5,484)
Gross deferred tax liabilities	(677,352)	(621,460)
Net deferred tax liabilities	$ (237,597)	$ (111,187)

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020	Sep. 27, 2019
Income Tax Contingency [Line Items]
Tax Rate Change	$ 3,210	$ 25,588	$ (6,811)
Valuation allowance	113,483	188,662
Change in deferred tax asset valuation	(75,200)
Change in deferred tax assets valuation allowance, amount	(59,121)	38,928	0
Change in deferred tax assets valuation allowance due to other various changes	(16,100)
Net operating losses	132,999	197,929
Foreign currency valuation allowance	55,400
Undistributed earnings of foreign subsidiaries	168,000
Amount of unrecognized deferred tax liability not recognized due to undistributed earnings of foreign subsidiaries	13,100
Gross unrecognized tax benefits	88,893	113,633	102,484	$ 104,355
Unrecognized tax benefits	88,893	113,633	102,484	$ 104,355
Unrecognized tax benefits that would impact effective tax rate	73,500
Accrued interest and penalties	43,500	41,600
Decrease in unrecognized tax benefits	2,200
Other items – net	5,677	(896)	$ (788)
Affiliated Entity
Income Tax Contingency [Line Items]
Undistributed earnings of foreign subsidiaries	101,700
Amount of unrecognized deferred tax liability not recognized due to undistributed earnings of foreign subsidiaries	25,000
Capital Loss Carryforward
Income Tax Contingency [Line Items]
Change in deferred tax assets valuation allowance, amount	26,000
Accounting Standards Update 2013-11
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits	81,900	91,900
Unrecognized tax benefits	81,900	91,900
Accounting Standards Update 2013-11 | Cumulative Effect, Period of Adoption, Adjustment
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits	7,000	21,700
Unrecognized tax benefits	7,000	21,700
United States Federal Tax Authority
Income Tax Contingency [Line Items]
Change in deferred tax assets valuation allowance, amount	33,100
Foreign Country
Income Tax Contingency [Line Items]
Loss carry forwards of foreign subsidiaries	491,300	760,400
Foreign Country | Her Majesty's Revenue and Customs (HMRC)
Income Tax Contingency [Line Items]
Tax Rate Change	3,200	$ 25,600
Expiring Between 2022 and 2031 | Foreign Country
Income Tax Contingency [Line Items]
Loss carry forwards of foreign subsidiaries	$ 83,700

Income Taxes - Income Tax Benef

Income Taxes - Income Tax Benefits Realized from the Exercise of Nonqualified Stock Options, and Disqualifying Dispositions of Stock Sold Under our Employee Stock Purchase Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Income Tax Disclosure [Abstract]
Income tax benefits realized under stock plans	$ 2.2	$ 9.9	$ 10.2

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense in Consolidated Statements of Earnings (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Income Tax Disclosure [Abstract]
Statutory amount	$ 184,033	$ 146,078	$ 92,652
State taxes, net of the federal benefit	19,316	14,564	7,254
Exclusion of tax on non-controlling interests	(7,533)	(7,999)	(6,622)
Foreign:
Difference in tax rates of foreign operations	(2,516)	3,684	(6,267)
Expense/(benefit) from foreign valuation allowance change	2,982	2,148	(16,861)
Nondeductible compensation	0	48,727	0
U.S. tax cost (benefit) of foreign operations	48,843	35,228	42,992
Tax differential on foreign earnings	49,309	89,787	19,864
Foreign tax credits	(33,734)	(25,230)	(26,471)
Tax Rate Change	3,210	25,588	(6,811)
Valuation allowance	(59,121)	38,928	0
Uncertain tax positions	(1,439)	978	(11,338)
Other items:
Energy efficient commercial buildings deduction	(2,681)	(3,760)	(7,267)
Disallowed officer compensation	6,034	6,689	5,081
Stock compensation	(2,168)	(9,946)	(10,234)
Other items – net	5,677	(896)	(788)
Total other items	6,862	(7,913)	(13,208)
Consolidated income tax expense from continuing operations	$ 160,903	$ 274,781	$ 55,320
Statutory tax rate	21%	21%	21%
State taxes, net of the federal benefit	2.20%	2.10%	1.60%
Exclusion of tax on non-controlling interests	(0.90%)	(1.10%)	(1.50%)
Foreign:
Difference in tax rates of foreign operations	(0.30%)	0.50%	(1.40%)
Expense/(benefit) from foreign valuation allowance change	0.30%	0.30%	(3.80%)
Nondeductible compensation	0%	7%	0%
U.S. tax cost (benefit) of foreign operations	5.60%	5.10%	9.70%
Tax differential on foreign earnings	5.60%	12.90%	4.50%
Foreign tax credits	(3.80%)	(3.60%)	(6.00%)
Tax Rate Change	0.40%	3.70%	(1.50%)
Valuation allowance	(6.70%)	5.60%	0%
Uncertain tax positions	(0.20%)	0.10%	(2.60%)
Other items:
Energy efficient commercial buildings deduction	(0.30%)	(0.50%)	(1.60%)
Disallowed officer compensation	0.70%	1%	1.20%
Stock compensation	(0.20%)	(1.40%)	(2.30%)
Other items – net	0.60%	(0.10%)	(0.20%)
Total other items	0.80%	(1.10%)	(3.00%)
Taxes on income from continuing operations (percent)	18.40%	39.50%	12.50%

Income Taxes - Income Tax Payme

Income Taxes - Income Tax Payments (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Income Tax Disclosure [Abstract]
Income tax payments	$ 113.9	$ 75.6	$ 39.8

Income Taxes - Components of ou

Income Taxes - Components of our Consolidated Earnings Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Income Tax Examination [Line Items]
Results of operations, income before income taxes	$ 876,347	$ 695,602	$ 441,203
United States Federal Tax Authority
Income Tax Examination [Line Items]
Results of operations, income before income taxes	415,673	634,820	208,302
Foreign earnings
Income Tax Examination [Line Items]
Results of operations, income before income taxes	$ 460,674	$ 60,782	$ 232,901

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Income Tax Disclosure [Abstract]
Balance, beginning of year	$ 113,633	$ 102,484	$ 104,355
Acquisitions	192	7,639
Divestitures			0
Additions based on tax positions related to the current year	1,136	7,088	1,064
Additions for tax positions of prior years	1,207	1,711	7,472
Reductions for tax positions of prior years	(3,672)	(4,851)	(6,695)
Settlement	(23,603)	(438)	(3,712)
Balance, end of year	$ 88,893	$ 113,633	$ 102,484

Joint Ventures and VIE's - Sche

Joint Ventures and VIE's - Schedule of Summarized Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Schedule of Equity Method Investments [Line Items]
Current assets	$ 4,721,994	$ 4,291,895
Total assets	14,660,419	14,632,609
Current liabilities	3,250,845	3,209,924
Gross profit	3,327,040	3,043,772	$ 2,586,668
Net earnings	715,412	430,829	523,867
Consolidated Entities
Schedule of Equity Method Investments [Line Items]
Revenue	1,253,800	1,037,300	912,900
Direct cost of contracts	(985,500)	(910,100)	(807,900)
Gross profit	268,300	127,200	105,000
Net earnings	92,300	84,300	$ 72,600
VIE, primary beneficiary | Consolidated Entities
Schedule of Equity Method Investments [Line Items]
Current assets	353,900	289,700
Non-Current assets	0	100
Total assets	353,900	289,800
Current liabilities	228,100	220,800
Total liabilities	$ 228,100	$ 220,800

Joint Ventures and VIE's - Narr

Joint Ventures and VIE's - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Variable Interest Entity [Line Items]
VIE unconsolidated assets	$ 14,660,419	$ 14,632,609
Impairment of equity method investment and other long term assets			$ 162,000
AWE ML
Variable Interest Entity [Line Items]
Investment in equity securities		$ 38,000
Ownership percentage		24.50%
Impairment of equity method investment and other long term assets		$ 38,500
C3.ai. Inc.
Variable Interest Entity [Line Items]
Gain on sale of stock	(49,600)
Unconsolidated Joint Venture | VIE, not primary beneficiary
Variable Interest Entity [Line Items]
Equity method investments exceeds its share of venture net assets	36,500	60,900	$ 82,200
Investment in equity securities	56,600	121,300
Accounts receivable from unconsolidated joint venture	21,100	19,700
Proportionate Consolidated Joint Venture | VIE, not primary beneficiary
Variable Interest Entity [Line Items]
VIE unconsolidated assets	109,300	115,100
VIE unconsolidated liabilities	$ 129,200	$ 129,500

Borrowings - Schedule of Long-t

Borrowings - Schedule of Long-term Debt (Details) £ in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2022 GBP (£)	Oct. 01, 2021 USD ($)
Debt Instrument [Line Items]
Total Long-term debt, net	$ 3,357,256		$ 2,839,933
Less: Current Portion	(50,415)		(53,456)
Less: Deferred Financing Fees	(3,466)		(5,069)
Term Loan Facility 2021
Debt Instrument [Line Items]
Total Long-term debt, net	923,580		1,081,724
Term Loan Facility 2020
Debt Instrument [Line Items]
Total Long-term debt, net	$ 882,263		988,940
Quarterly principal payment, percent of aggregate borrowings	1.25%
Quarterly principal payment	$ 9,125	£ 3,125
Senior Notes, Series A
Debt Instrument [Line Items]
Total Long-term debt, net	$ 190,000		190,000
Stated interest rate	4.27%
Senior Notes, Series B
Debt Instrument [Line Items]
Total Long-term debt, net	$ 180,000		180,000
Stated interest rate	4.42%
Senior Notes, Series C
Debt Instrument [Line Items]
Total Long-term debt, net	$ 130,000		130,000
Stated interest rate	4.52%
Revolving Credit Facility
Debt Instrument [Line Items]
Total Long-term debt, net	$ 1,105,294		$ 327,794
Eurocurrency Interest Rate | Term Loan Facility 2020
Debt Instrument [Line Items]
Margin added to variable rate interest rate	3.60%	3.60%
Eurocurrency Interest Rate | Revolving Credit Facility
Debt Instrument [Line Items]
Margin added to variable rate interest rate	3.60%	3.60%
Eurocurrency Interest Rate | Minimum | Term Loan Facility 2021
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0.875%	0.875%
Eurocurrency Interest Rate | Minimum | Term Loan Facility 2020
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0.875%	0.875%
Eurocurrency Interest Rate | Maximum | Term Loan Facility 2021
Debt Instrument [Line Items]
Margin added to variable rate interest rate	1.625%	1.625%
Eurocurrency Interest Rate | Maximum | Term Loan Facility 2020
Debt Instrument [Line Items]
Margin added to variable rate interest rate	1.50%	1.50%
Base Interest Rate | Minimum | Term Loan Facility 2021
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0%	0%
Base Interest Rate | Minimum | Term Loan Facility 2020
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0%	0%
Base Interest Rate | Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0%	0%
Base Interest Rate | Maximum | Term Loan Facility 2021
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0.625%	0.625%
Base Interest Rate | Maximum | Term Loan Facility 2020
Debt Instrument [Line Items]
Margin added to variable rate interest rate	50%	50%
Base Interest Rate | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0.625%	0.625%
LIBOR | Term Loan Facility 2021
Debt Instrument [Line Items]
Margin added to variable rate interest rate	4.06%	4.06%	1.43%
LIBOR | Maximum | Term Loan Facility 2020
Debt Instrument [Line Items]
Margin added to variable rate interest rate	4.49%	4.49%	1.45%
LIBOR | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Margin added to variable rate interest rate	4.08%	4.08%	1.45%
Sterling Overnight Interbank Average Rate | Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Margin added to variable rate interest rate	0.875%	0.875%
Sterling Overnight Interbank Average Rate | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Margin added to variable rate interest rate	1.625%	1.625%

Borrowings - Long-term Debt (Na

Borrowings - Long-term Debt (Narrative) (Details)

12 Months Ended

Oct. 07, 2022 USD ($)

Jan. 20, 2021 USD ($)

Jan. 20, 2021 GBP (£)

Dec. 16, 2020

Mar. 27, 2019 USD ($) tranche

Sep. 30, 2022 USD ($) case

Oct. 01, 2021 USD ($)

Oct. 02, 2020 USD ($)

Mar. 25, 2020 USD ($)

Mar. 25, 2020 GBP (£)

Mar. 12, 2018 USD ($) series

Feb. 07, 2014 USD ($)

Line of Credit Facility [Line Items]

Proceeds from long-term borrowings

$ 3,145,500,000

$ 4,445,080,000

$ 2,986,661,000

Total long-term debt, net

3,357,256,000

2,839,933,000

Number of senior debt | series

3

Treasury Lock

Line of Credit Facility [Line Items]

Aggregate principal amount

$ 250,000,000

Number of instruments held | case

2

Senior Notes

Line of Credit Facility [Line Items]

Debt outstanding

$ 19,000,000

Contingent interest rate (in basis points)

0.75%

Minimum

Line of Credit Facility [Line Items]

Facility fee percentage

0.08%

Maximum

Line of Credit Facility [Line Items]

Facility fee percentage

0.23%

Revolving Credit Facility

Line of Credit Facility [Line Items]

Number of tranches in revolving credit facility | tranche

2

Total long-term debt, net

$ 1,105,294,000

$ 327,794,000

Long-term debt fair value

$ 498,300,000

Revolving Credit Facility | Senior Notes | Subsequent Event

Line of Credit Facility [Line Items]

Repayments of senior debt

$ 481,000,000

Revolving Credit Facility | Maximum | LIBOR

Line of Credit Facility [Line Items]

Margin added to variable rate interest rate

4.08%

1.45%

First Amendment to the Revolving Credit Facility

Line of Credit Facility [Line Items]

Consolidated leverage ratio

3

First Amendment to the Revolving Credit Facility | LIBOR

Line of Credit Facility [Line Items]

Margin added to variable rate interest rate

1.625%

Letter of Credit

Line of Credit Facility [Line Items]

Credit facility, maximum borrowing capacity

$ 400,000,000

Sub Facility Of Swing Line Loans

Line of Credit Facility [Line Items]

Credit facility, maximum borrowing capacity

50,000,000

$1.6 Billion Revolving Credit Facility

Line of Credit Facility [Line Items]

Credit facility, maximum borrowing capacity

$ 1,600,000,000

Available borrowing capacity

1,140,000,000

$1.6 Billion Revolving Credit Facility | Revolving Credit Facility

Line of Credit Facility [Line Items]

Credit facility, maximum borrowing capacity

$ 2,250,000,000

Accordion feature of loan

$ 3,250,000,000

$1.6 Billion Revolving Credit Facility | Letter of Credit

Line of Credit Facility [Line Items]

Direct borrowings on credit facility

1,300,000

Term Loan Facility 2020

Line of Credit Facility [Line Items]

Aggregate principal amount

$ 730,000,000

Total long-term debt, net

$ 882,263,000

$ 988,940,000

Term Loan Facility 2020 | Subsidiaries

Line of Credit Facility [Line Items]

Aggregate principal amount | £

£ 250,000,000

Term Loan Facility 2020 | Maximum | LIBOR

Line of Credit Facility [Line Items]

Margin added to variable rate interest rate

4.49%

1.45%

2021 Term Loan Facility

Line of Credit Facility [Line Items]

Proceeds from long-term borrowings

$ 200,000,000

£ 650,000,000

Senior Notes As Amended Note Purchase Agreement

Line of Credit Facility [Line Items]

Total long-term debt, net

$ 500,000,000

Committed And Uncommitted Letter Of Credit Facility | Letter of Credit

Line of Credit Facility [Line Items]

Direct borrowings on credit facility

$ 279,200,000

Line of Credit

Line of Credit Facility [Line Items]

Letters of credit outstanding

$ 280,500,000

Borrowings - Schedule of Intere

Borrowings - Schedule of Interest Paid (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Debt Disclosure [Abstract]
Interest paid	$ 88,031	$ 54,860	$ 58,257

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Leases [Abstract]
Operating lease cost	$ 151,134	$ 160,026	$ 169,967
Variable lease cost	36,631	31,727	35,083
Sublease income	(15,207)	(12,359)	(14,719)
Total lease cost	$ 172,558	$ 179,394	$ 190,331

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021
Leases [Abstract]
Cash paid for amounts included in the measurements of lease liabilities	$ 229,275	$ 209,594
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 38,110	$ 165,770
Weighted average remaining lease term - operating leases	6 years 3 months 18 days	7 years
Weighted average discount rate - operating leases	2.80%	2.60%

Leases - Schedule of Operating

Leases - Schedule of Operating Lease Maturity (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Leases [Abstract]
2023	$ 168,347
2024	149,492
2025	125,494
2026	106,247
2027	86,639
Thereafter	196,628
Remaining lease payments under operating leases	832,847
Less Interest	(75,229)
Operating lease liabilities	$ 757,618

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Lessee, Lease, Description [Line Items]
Impairment of equity method investment and other long term assets	$ 78,292	$ 40,640	$ 162,238
Right-of-Use Lease Asset
Lessee, Lease, Description [Line Items]
Impairment of equity method investment and other long term assets	60,700		127,000
Other Long-Lived Assets
Lessee, Lease, Description [Line Items]
Impairment of equity method investment and other long term assets	$ 17,700		$ 35,000

Employee Stock Purchase and S_3

Employee Stock Purchase and Stock Incentive Plans - Stock Issuance Activity Under the ESPP (Details) - USD ($)	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount (percent) available to employees on the purchase of common stock	5%
Aggregate Purchase Price Paid for Shares Sold (in shares)	$ 38,648,000	$ 32,149,000	$ 27,813,000
Aggregate Number of Shares Sold (in shares)	302,429	287,587	333,078
Number of remaining shares reserved for issuance (in shares)	4,487,176
ESPP's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of remaining shares reserved for issuance (in shares)	2,875,448

Employee Stock Purchase and S_4

Employee Stock Purchase and Stock Incentive Plans - Stock Purchase and Stock Option Plans Information on the 1999 Plans (Details) - shares	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	30,950,000
Number of remaining shares reserved for issuance (in shares)	4,487,176
Number of shares relating to outstanding stock options at September 27, 2019 (in shares)	439,349
Number of shares available for future awards (in shares)	4,047,827	4,354,529
1999 SIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	29,850,000
Number of remaining shares reserved for issuance (in shares)	4,244,964
Number of shares relating to outstanding stock options at September 27, 2019 (in shares)	358,224
Number of shares available for future awards (in shares)	3,886,740	4,166,975
1999 SIP | Other Than Option Stock Appreciation Rights SARS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award number of shares, fungible share basis (in shares)	1.92
Award number of shares, non-fungible share basis (in shares)	1
1999 ODSP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	1,100,000
Number of remaining shares reserved for issuance (in shares)	242,212
Number of shares relating to outstanding stock options at September 27, 2019 (in shares)	81,125
Number of shares available for future awards (in shares)	161,087	187,554
Award number of shares, non-fungible share basis (in shares)	1.92

Employee Stock Purchase and S_5

Employee Stock Purchase and Stock Incentive Plans - Fair Value of Shares Vested (Details) - Restricted Stock Units (RSUs) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested	$ 45,755	$ 46,869	$ 50,207
Service Condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested	23,077	20,374	29,209
Service Market And Performance Conditions at Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested	22,678	$ 26,495	$ 20,998
1999 SIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards not yet recognized	$ 81,900
Exercisable options outstanding, weighted average remaining contractual life (years)	2 years 2 months 12 days

Employee Stock Purchase and S_6

Employee Stock Purchase and Stock Incentive Plans - Stock Option Activity Under the 1999 Plans and the 1981 Plan (Details) - $ / shares	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of stock options outstanding, beginning balance (in shares)	573,984	706,489	926,606
Number of stock options, Granted (in shares)	150,951
Number of stock options, Exercised (in shares)	(284,502)	(130,030)	(212,467)
Number of stock options, Canceled or expired (in shares)	(1,084)	(2,475)	(7,650)
Number of stock options outstanding, ending balance (in shares)	439,349	573,984	706,489
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, beginning balance (in dollars per share)	$ 45.65	$ 45.91	$ 45.48
Weighted Average Exercise Price, Granted (in dollars per share)	12.79
Weighted Average Exercise Price, Exercised (in dollars per share)	43.56	47.07	44.05
Weighted Average Exercise Price, Canceled or expired (in dollars per share)	21.34	45.18	45.31
Weighted Average Exercise Price, ending balance (in dollars per share)	$ 35.77	$ 45.65	$ 45.91

Employee Stock Purchase and S_7

Employee Stock Purchase and Stock Incentive Plans - Total Intrinsic Value of Options Exercised (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Share-Based Payment Arrangement [Abstract]
Intrinsic value of stock options exercised	$ 28,149	$ 9,693	$ 9,986
Intrinsic value of options exercisable	$ 25,200

Employee Stock Purchase and S_8

Employee Stock Purchase and Stock Incentive Plans - Information Regarding Stock Option Plans (Details) - $ / shares	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
At fiscal year end:
Range of exercise prices for options outstanding, minimum (in dollars per share)	$ 5.64	$ 37.03	$ 32.51
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 60.43	$ 60.43	$ 60.43
Number of options exercisable (in shares)	367,624	573,984	706,489
For the fiscal year:
Range of prices relating to options exercised, minimum (in dollars per share)	$ 11.27	$ 32.51	$ 37.03
Range of prices relating to options exercised, maximum (in dollars per share)	$ 60.43	$ 60.43	$ 60.08

Employee Stock Purchase and S_9

Employee Stock Purchase and Stock Incentive Plans - Information Regarding Options Outstanding, and Options Exercisable (Details) - $ / shares	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020	Sep. 27, 2019
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	439,349	573,984	706,489	926,606
Options Outstanding, Weighted Average Remaining Contractual Life (years)	3 years 11 months 26 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 35.77	$ 45.65	$ 45.91	$ 45.48
Options Exercisable, Number (in shares)	439,349
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 35.77
Range of exercise prices for options outstanding, minimum (in dollars per share)	5.64	37.03	32.51
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 60.43	$ 60.43	$ 60.43
$32.51 - $37.03
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	149,328
Options Outstanding, Weighted Average Remaining Contractual Life (years)	7 years 7 months 6 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 12.79
Options Exercisable, Number (in shares)	149,328
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 12.79
Range of exercise prices for options outstanding, minimum (in dollars per share)	32.51
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 37.03
$37.43 - $46.09
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	178,009
Options Outstanding, Weighted Average Remaining Contractual Life (years)	2 years 9 months 25 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 43.01
Options Exercisable, Number (in shares)	178,009
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 43.01
Range of exercise prices for options outstanding, minimum (in dollars per share)	37.43
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 46.09
$47.11 - $55.13
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	90,137
Options Outstanding, Weighted Average Remaining Contractual Life (years)	11 months 15 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 53.53
Options Exercisable, Number (in shares)	90,137
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 53.53
Range of exercise prices for options outstanding, minimum (in dollars per share)	47.11
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 55.13
$60.08 - $80.63
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	21,875
Options Outstanding, Weighted Average Remaining Contractual Life (years)	1 year 5 months 1 day
Options Outstanding, Weighted Average Price (in dollars per share)	$ 60.43
Options Exercisable, Number (in shares)	21,875
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 60.43
Range of exercise prices for options outstanding, minimum (in dollars per share)	60.08
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 80.63

Employee Stock Purchase and _10

Employee Stock Purchase and Stock Incentive Plans - Number of Shares of Restricted Stock and Restricted Stock Units Issued Under the 1999 Plans (Details) - shares	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
1999 ODSP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award number of shares, non-fungible share basis (in shares)	1.92
1999 ODSP | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and restricted stock units outstanding (in shares)	0
1999 ODSP | Restricted Stock Units (RSUs) | Service Condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and restricted stock units issued (in shares)	13,785	17,680	18,100
Restricted stock and restricted stock units outstanding (in shares)	57,133
1999 SIP | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and restricted stock units issued (in shares)	818	0	0
Restricted stock and restricted stock units canceled (in shares)	0	0	34,417
Restricted stock and restricted stock units outstanding (in shares)	252
1999 SIP | Restricted Stock Units (RSUs) | Service Condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and restricted stock units issued (in shares)	290,582	380,722	351,670
Restricted stock and restricted stock units canceled (in shares)	57,366	201,967	183,099
Restricted stock and restricted stock units outstanding (in shares)	732,945
1999 SIP | Restricted Stock Units (RSUs) | Service Market And Performance Conditions at Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and restricted stock units issued (in shares)	176,470	181,132	202,792
Restricted stock and restricted stock units canceled (in shares)	31,966	218,520	160,781
Restricted stock and restricted stock units outstanding (in shares)	585,099

Employee Stock Purchase and _11

Employee Stock Purchase and Stock Incentive Plans - Unvested Restricted Stock and Restricted Stock Units Roll Forward (Details)	12 Months Ended
	Sep. 30, 2022 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares)	150,951
Restricted Stock And Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance outstanding (in shares)	1,444,231
Granted (in shares)	623,323
Vested (in shares)	(602,793)
Canceled (in shares)	(89,332)
Ending balance outstanding (in shares)	1,375,429
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance outstanding (in dollars per share) | $ / shares	$ 91.23
Granted (in dollars per share) | $ / shares	127.35
Vested (in dollars per share) | $ / shares	80.95
Canceled (in dollars per share) | $ / shares	113.89
Ending balance outstanding (in dollars per share) | $ / shares	$ 110.64

Employee Stock Purchase and _12

Employee Stock Purchase and Stock Incentive Plans - Narrative (Details) $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock options exercised | $	$ 12.4
1999 SIP | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and restricted stock units outstanding (in shares) | shares	252
1999 SIP | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable options outstanding, weighted average remaining contractual life (years)	2 years 2 months 12 days
1999 ODSP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable options outstanding, weighted average remaining contractual life (years)	3 years 1 month 6 days

Savings and Deferred Compensa_3

Savings and Deferred Compensation Plans Savings and Deferred Compensation Plans - Savings Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Savings And Deferred Compensation Plans [Abstract]
Savings plans contributions	$ 184,399	$ 132,865	$ 91,833

Savings and Deferred Compensa_4

Savings and Deferred Compensation Plans Savings and Deferred Compensation Plans - Deferred Compensation Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Savings And Deferred Compensation Plans [Abstract]
Deferred compensation plans expense	$ 1,697	$ 2,900	$ 203
Deferred compensation arrangement investments	$ 165,118	$ 210,223

Pension and Other Postretirem_3

Pension and Other Postretirement Benefit Plans - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jul. 02, 2021	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020	Mar. 02, 2021
Defined Benefit Plan Disclosure [Line Items]
Loss on pension and retiree medical plan changes		$ 123	$ 2,783	$ 4,598
Gain on litigation settlement		$ 19,500
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Period of annual average returns used in return on plan assets simulation model (in years)		20 years
PA Consulting Group Limited
Defined Benefit Plan Disclosure [Line Items]
Percentage of outstanding shares of common and preferred stock acquired					65%
PA Consulting | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net benefit obligation at the end of the year					$ 1,025,000
Fair value of plan assets at the end of the year					$ 1,018,000
Plan assets (decrease) for assets transferred from Plan	$ 960,000
Benefit obligation decrease for liabilities transferred from plan	$ 960,000
Sverdrup and Ireland Pension Plans | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Loss on pension and retiree medical plan changes		$ 100	$ 2,800

Pension and Other Postretirem_4

Pension and Other Postretirement Benefit Plans - Schedule of Change in Plans' Combined Net Benefit Obligation (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Net benefit obligation at the beginning of the year	$ 404,820	$ 437,920
Service cost	236	456	$ 409
Interest cost	10,350	10,221	12,673
Participants’ contributions	0	0
Actuarial gains (1)	(85,067)	(11,808)
Benefits paid	(25,565)	(25,582)
Curtailments/settlements/plan amendments	(5,271)	(6,387)
Acquisition of PA Consulting Plans, net of post-deal transfers	0	0
Effect of exchange rate changes and other, net	0	0
Net benefit obligation at the end of the year	299,503	404,820	437,920
Non-U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Net benefit obligation at the beginning of the year	2,375,640	2,388,077
Service cost	6,480	6,568	5,710
Interest cost	42,328	38,907	39,469
Participants’ contributions	249	212
Actuarial gains (1)	(651,798)	(140,670)
Benefits paid	(74,378)	(74,477)
Curtailments/settlements/plan amendments	(2,641)	(13,932)
Acquisition of PA Consulting Plans, net of post-deal transfers	0	66,065
Effect of exchange rate changes and other, net	(330,414)	104,890
Net benefit obligation at the end of the year	$ 1,365,466	$ 2,375,640	$ 2,388,077

Pension and Other Postretirem_5

Pension and Other Postretirement Benefit Plans - Schedule of Change in Combined Fair Value of Plans' Assets (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021
U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	$ 385,521	$ 382,250
Actual (loss) return on plan assets	(68,585)	35,152
Employer contributions	93	88
Participants’ contributions	0	0
Gross benefits paid	(25,565)	(25,582)
Curtailments/settlements/plan amendments	(5,271)	(6,387)
Acquisition of PA Consulting Plans, net of post-deal transfers	0	0
Effect of exchange rate changes and other, net	0	0
Fair value of plan assets at the end of the year	286,193	385,521
Non-U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	2,203,495	2,043,356
Actual (loss) return on plan assets	(557,972)	60,040
Employer contributions	33,032	39,085
Participants’ contributions	249	212
Gross benefits paid	(74,378)	(74,477)
Curtailments/settlements/plan amendments	(2,641)	(13,932)
Acquisition of PA Consulting Plans, net of post-deal transfers	0	60,160
Effect of exchange rate changes and other, net	(304,160)	89,051
Fair value of plan assets at the end of the year	$ 1,297,625	$ 2,203,495

Pension and Other Postretirem_6

Pension and Other Postretirement Benefit Plans - Reconciliation of Combined Funded Status of Plans and Recognized in Consolidated Balance Sheet (Details) - Pension Plan - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net benefit obligation at the end of the year	$ 299,503	$ 404,820	$ 437,920
Fair value of plan assets at the end of the year	286,193	385,521	382,250
Underfunded amount recognized at the end of the year	13,310	19,299
Non-U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net benefit obligation at the end of the year	1,365,466	2,375,640	2,388,077
Fair value of plan assets at the end of the year	1,297,625	2,203,495	$ 2,043,356
Underfunded amount recognized at the end of the year	$ 67,841	$ 172,145

Pension and Other Postretirem_7

Pension and Other Postretirement Benefit Plans - Accumulated Benefit Obligation (Details) - Pension Plan - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at the end of the year	$ 299,347	$ 404,283
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at the end of the year	$ 1,355,717	$ 2,305,808

Pension and Other Postretirem_8

Pension and Other Postretirement Benefit Plans - Schedule of Amount Recognized in Accompanying Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Defined Benefit Plan Disclosure [Line Items]
Liabilities relating to defined benefit pension and retirement plans	$ 271,332	$ 418,080
Pension Plan | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Prepaid benefit cost included in noncurrent assets	0	0
Accrued benefit cost included in current liabilities	83	84
Liabilities relating to defined benefit pension and retirement plans	13,227	19,215
Net amount recognized at the end of the year	13,310	19,299
Pension Plan | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Prepaid benefit cost included in noncurrent assets	54,897	48,340
Accrued benefit cost included in current liabilities	4,359	3,873
Liabilities relating to defined benefit pension and retirement plans	118,379	216,612
Net amount recognized at the end of the year	$ 67,841	$ 172,145

Pension and Other Postretirem_9

Pension and Other Postretirement Benefit Plans - Schedule of Significant Actuarial Assumptions in Determining the Funded Status and Benefit Cost (Details) - Pension Plan	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Rates of compensation increases	3.50%	3.50%	3.50%
Minimum | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rates	4.20%	2.30%	2%
Expected long-term rates of return on assets	5.50%	4.70%	4.60%
Minimum | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rates	2.40%	0.60%	0.40%
Rates of compensation increases	2.50%	2.40%	2.70%
Expected long-term rates of return on assets	3.30%	2%	1.80%
Maximum | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rates	5.50%	2.80%	2.70%
Expected long-term rates of return on assets	6.40%	5.10%	4.70%
Maximum | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rates	7.40%	6.60%	6.60%
Rates of compensation increases	9%	7.50%	7.50%
Expected long-term rates of return on assets	7.50%	7%	7%

Pension and Other Postretire_10

Pension and Other Postretirement Benefit Plans - Schedule of Pension Plans Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Reclassification adjustments:
Total	$ (87,166)	$ (104,165)	$ 61,977
Pension Plan | U.S. Plans
Arising during the period:
Net actuarial loss (gain)	578	(25,109)	(900)
Prior service cost	0	0	1,589
Total	578	(25,109)	689
Reclassification adjustments:
Net actuarial losses	(2,157)	(3,204)	(2,653)
Prior service (benefit)	(324)	(325)	(244)
Total	(2,481)	(3,529)	(2,897)
Total	(1,903)	(28,638)	(2,208)
Pension Plan | Non-U.S. Plans
Arising during the period:
Net actuarial loss (gain)	(78,705)	(65,547)	71,676
Prior service cost	0	0	0
Total	(78,705)	(65,547)	71,676
Reclassification adjustments:
Net actuarial losses	(5,492)	(8,761)	(6,322)
Prior service (benefit)	(1,066)	(1,219)	(1,169)
Total	(6,558)	(9,980)	(7,491)
Total	$ (85,263)	$ (75,527)	$ 64,185

Pension and Other Postretire_11

Pension and Other Postretirement Benefit Plans - Schedule of Pension Plans Recorded in Accumulated Other Comprehensive Loss Not Yet Recognized as Component of Net Periodic Pension Cost (Details) - Pension Plan - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 37,638	$ 39,217
Prior service cost	697	1,021
Total	38,335	40,238
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	248,716	328,397
Prior service cost	20,344	25,926
Total	$ 269,060	$ 354,323

Pension and Other Postretire_12

Pension and Other Postretirement Benefit Plans - Schedule of Accumulated Comprehensive Income Amortized Against Earnings in the Next Year (Details) - Pension Plan $ in Thousands	Sep. 30, 2022 USD ($)
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial (gain) or loss	$ (1,770)
Unrecognized prior service cost	431
Accumulated comprehensive (gain) or loss to be recorded against earnings	(1,339)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial (gain) or loss	5,310
Unrecognized prior service cost	1,246
Accumulated comprehensive (gain) or loss to be recorded against earnings	$ 6,556

Pension and Other Postretire_13

Pension and Other Postretirement Benefit Plans - Schedule of Weighted Average Measurement of Assets and Liabilities (Details) - Pension Plan	Sep. 30, 2022	Oct. 01, 2021
Equity securities | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	2%	3%
Equity securities | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	15%	15%
Debt securities | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	66%	58%
Debt securities | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	49%	54%
Real estate investments | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	0%	0%
Real estate investments | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	11%	9%
Other | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	32%	39%
Other | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	25%	22%

Pension and Other Postretire_14

Pension and Other Postretirement Benefit Plans - Schedule of Fair Value of Pension Plan Assets (Details) - Pension Plan - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	$ 286,193	$ 385,521	$ 382,250
U.S. Plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	164,032	237,653
U.S. Plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	122,161	147,868
U.S. Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	6,708	12,331
U.S. Plans | Equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	6,708	12,331
U.S. Plans | Equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Equities | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Domestic bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	171,357	206,594
U.S. Plans | Domestic bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	64,396	74,456
U.S. Plans | Domestic bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	106,961	132,138
U.S. Plans | Domestic bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Domestic bonds | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Overseas bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	15,200	15,730
U.S. Plans | Overseas bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Overseas bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	15,200	15,730
U.S. Plans | Overseas bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Overseas bonds | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Cash and equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	19,025	22,634
U.S. Plans | Cash and equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	19,025	22,634
U.S. Plans | Cash and equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Cash and equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Cash and equivalents | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	73,903	128,232
U.S. Plans | Mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	73,903	128,232
U.S. Plans | Mutual funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
U.S. Plans | Mutual funds | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	1,297,625	2,203,495	2,043,356
Non-U.S. Plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	9,667	27,579
Non-U.S. Plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	774,480	1,464,056
Non-U.S. Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	321,702	482,057
Non-U.S. Plans | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	191,776	229,803
Non-U.S. Plans | Equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	44,194	88,779
Non-U.S. Plans | Equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	42,655	86,117
Non-U.S. Plans | Equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Equities | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	1,539	2,662
Non-U.S. Plans | Overseas equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	150,869	243,314
Non-U.S. Plans | Overseas equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Overseas equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	74,056	142,243
Non-U.S. Plans | Overseas equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Overseas equities | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	76,813	101,071
Non-U.S. Plans | Domestic bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	38,448	48,119
Non-U.S. Plans | Domestic bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Domestic bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	38,448	48,119
Non-U.S. Plans | Domestic bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Domestic bonds | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Overseas bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	597,594	1,106,201
Non-U.S. Plans | Overseas bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Overseas bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	532,697	1,049,585
Non-U.S. Plans | Overseas bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Overseas bonds | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	64,897	56,616
Non-U.S. Plans | Cash and equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	11,502	28,901
Non-U.S. Plans | Cash and equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	9,667	27,579
Non-U.S. Plans | Cash and equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	1,835	1,322
Non-U.S. Plans | Cash and equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Cash and equivalents | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	143,903	187,689
Non-U.S. Plans | Real estate | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Real estate | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	4,076	17,319
Non-U.S. Plans | Real estate | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	102,868	116,936	105,422
Non-U.S. Plans | Real estate | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	36,959	53,434
Non-U.S. Plans | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	80,231	133,802
Non-U.S. Plans | Insurance contracts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Insurance contracts | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Insurance contracts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	80,231	133,802	67,709
Non-U.S. Plans | Insurance contracts | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year		0
Non-U.S. Plans | Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	150,171	247,339
Non-U.S. Plans | Hedge funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Hedge funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Hedge funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	138,603	231,319	$ 171,730
Non-U.S. Plans | Hedge funds | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	11,568	16,020
Non-U.S. Plans | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	80,713	119,351
Non-U.S. Plans | Mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Mutual funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	80,713	119,351
Non-U.S. Plans | Mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	0	0
Non-U.S. Plans | Mutual funds | Investments measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the year	$ 0	$ 0

Pension and Other Postretire_15

Pension and Other Postretirement Benefit Plans - Summary of Changes in the Fair Value of Plans' Level 3 Assets (Details) - Pension Plan - Non-U.S. Plans - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	$ 2,203,495	$ 2,043,356
Effect of exchange rate changes	304,160	(89,051)
Fair value of plan assets at the end of the year	1,297,625	2,203,495
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	482,057
Fair value of plan assets at the end of the year	321,702	482,057
Real estate investments
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	187,689
Fair value of plan assets at the end of the year	143,903	187,689
Real estate investments | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	116,936	105,422
Purchases, sales, and settlements	(8,686)	6,288
Realized and unrealized losses	14,701	398
Acquisition of PA Consulting Plans, net of post-deal transfers		0
Effect of exchange rate changes	(20,083)	4,828
Fair value of plan assets at the end of the year	102,868	116,936
Insurance contracts
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	133,802
Fair value of plan assets at the end of the year	80,231	133,802
Insurance contracts | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	133,802	67,709
Purchases, sales, and settlements	(6,312)	2,413
Realized and unrealized losses	(24,770)	1,448
Acquisition of PA Consulting Plans, net of post-deal transfers		60,160
Effect of exchange rate changes	(22,489)	2,072
Fair value of plan assets at the end of the year	80,231	133,802
Hedge funds
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	247,339
Fair value of plan assets at the end of the year	150,171	247,339
Hedge funds | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	231,319	171,730
Purchases, sales, and settlements	(11,553)	51,513
Realized and unrealized losses	(42,964)	864
Acquisition of PA Consulting Plans, net of post-deal transfers		0
Effect of exchange rate changes	(38,199)	7,212
Fair value of plan assets at the end of the year	$ 138,603	$ 231,319

Pension and Other Postretire_16

Pension and Other Postretirement Benefit Plans - Anticipated Cash Contributions (Details) - Pension Plan $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($)
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Anticipated cash contributions	$ 0
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Anticipated cash contributions	$ 26,651

Pension and Other Postretire_17

Pension and Other Postretirement Benefit Plans - Schedule of Expected Payments to Participants in Pension Plan (Details) - Pension Plan $ in Thousands	Sep. 30, 2022 USD ($)
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
2023	$ 30,869
2024	28,884
2025	28,088
2026	27,377
2027	26,139
For the periods 2028 through 2032	115,872
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
2023	62,922
2024	67,058
2025	68,129
2026	72,069
2027	78,254
For the periods 2028 through 2032	$ 351,748

Pension and Other Postretire_18

Pension and Other Postretirement Benefit Plans - Schedule of Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Nonoperating Income (Expense)	Nonoperating Income (Expense)	Nonoperating Income (Expense)
Pension Plan | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 236	$ 456	$ 409
Interest cost	10,350	10,221	12,673
Expected return on plan assets	(16,933)	(15,932)	(17,670)
Actuarial loss	2,861	4,249	3,518
Prior service cost	430	431	323
Net pension cost, before special items	(3,056)	(575)	(747)
Curtailment expense/Settlement loss	(206)	(64)	3,436
Total net periodic pension (income) cost recognized	(3,262)	(639)	2,689
Pension Plan | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	6,480	6,568	5,710
Interest cost	42,328	38,907	39,469
Expected return on plan assets	(71,875)	(90,346)	(93,407)
Actuarial loss	7,147	10,834	7,578
Prior service cost	1,421	1,519	1,405
Net pension cost, before special items	(14,499)	(32,518)	(39,245)
Curtailment expense/Settlement loss	329	2,847	1,341
Total net periodic pension (income) cost recognized	$ (14,170)	$ (29,671)	$ (37,904)

Pension and Other Postretire_19

Pension and Other Postretirement Benefit Plans - Schedule of Contribution to Multiemployer Pension Plans (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Multiemployer Plans [Line Items]
Contributions to multiemployer pension plans	$ 12,586	$ 13,029	$ 8,559
Europe
Multiemployer Plans [Line Items]
Contributions to multiemployer pension plans	1,548	1,713	1,922
U.S. Plans
Multiemployer Plans [Line Items]
Contributions to multiemployer pension plans	$ 11,038	$ 11,316	$ 6,637

PA Consulting Business Combin_3

PA Consulting Business Combination - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Mar. 02, 2021	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Business Acquisition [Line Items]
Preferred redeemable noncontrolling interests redemption value adjustment		$ 0	$ (57,307)	$ 0
Preference share effect on basic earnings per share (in dollars per share)			$ 0.44
Proceeds from issuances of redeemable noncontrolling interests		49,742	$ 0	$ 0
PA Consulting Employees
Business Acquisition [Line Items]
Ownership interest of employees	35%
Proceeds from issuances of redeemable noncontrolling interests		49,700
PA Consulting Group Limited
Business Acquisition [Line Items]
Percentage of outstanding shares of common and preferred stock acquired	65%
Remaining percentage of outstanding shares of common and preferred stock acquired	35%
Consideration transferred	$ 1,700,000
Consideration received from acquiree	261,000
Redeemable noncontrolling interests had a fair value	582,400
Goodwill recognized expected to be deductible for tax purposes	$ 0
Cash in employee benefit trust		13,700
Allocated share-based compensation expense		$ 3,300	$ 400
PA Consulting Group Limited | Customer Relationships, Contracts And Backlog And Trade names
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	12 years
PA Consulting Group Limited | Customer Relationships, Contracts And Backlog And Trade names | Minimum
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	9 years
PA Consulting Group Limited | Customer Relationships, Contracts And Backlog And Trade names | Maximum
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	20 years

PA Consulting Business Combin_4

PA Consulting Business Combinations - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021	Mar. 02, 2021
Assets
Goodwill	$ 7,184,658	$ 7,197,000
PA Consulting Group Limited
Assets
Cash and cash equivalents			$ 134,900
Receivables			166,500
Property, equipment and improvements, net			40,500
Goodwill			1,454,000
Identifiable intangible assets			1,004,200
Prepaid expenses and other current assets			9,500
Miscellaneous long term assets			84,000
Total Assets			2,893,600
Liabilities
Accounts payable			6,500
Accrued liabilities and other current liabilities			354,800
Other long term liabilities			248,000
Total Liabilities			609,300
Redeemable Noncontrolling interests			582,400
Net assets acquired			$ 1,701,900

PA Consulting Business Combin_5

PA Consulting Business Combinations - Summary of Unaudited Proforma Operating Results (Details) - PA Consulting Group Limited - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Oct. 01, 2021	Oct. 02, 2020
Business Acquisition [Line Items]
Revenues	$ 14,504.3	$ 14,348.1
Net earnings of the Group	695.1	83.5
Net earnings attributable to Jacobs	$ 548	$ 138.6
Net earnings attributable to Jacobs per share:
Basic earnings (loss) per share (in dollars per share)	$ 4.21	$ 0.62
Diluted earnings (loss) per share (in dollars per share)	$ 4.17	$ 0.61
Business acquisitions pro forma income tax expense (benefit)	$ (330.7)	$ (13.5)

PA Consulting Business Combin_6

PA Consulting Business Combination - Change in Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Noncontrolling interests - distributions and other	$ (27,248)	$ (44,372)	$ (41,032)
Noncontrolling interest, Ending balance	44,336	34,796
Preferred redeemable noncontrolling interests redemption value adjustment	0	$ (57,307)	$ 0
PA Consulting Employees
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Noncontrolling interest, Beginning balance	657,722
Accrued Preferred Dividend to Preference Shareholders	67,598
Noncontrolling interests - distributions and other	(67,598)
Net earnings attributable to redeemable noncontrolling interest to Common Shareholders	34,585
Redeemable Noncontrolling interests redemption value adjustment	27,657
Repurchase of redeemable noncontrolling interests	(53,834)
Issuance of redeemable noncontrolling interests	54,884
Cumulative translation adjustment and other	(88,492)
Noncontrolling interest, Ending balance	$ 632,522

Other Business Combinations - N

Other Business Combinations - Narrative (Details) - USD ($) $ in Millions	Feb. 04, 2022	Nov. 19, 2021	Nov. 24, 2020	Mar. 06, 2020
Contracts and backlog intangible
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life			9 years
Buffalo Group
Business Acquisition [Line Items]
Consideration transferred			$ 190.1
Business combination consideration paid in cash			182.4
Contingent consideration			7.7
Long term liabilities			7.7
Cash and cash equivalents			$ 8.4
Wood Group
Business Acquisition [Line Items]
Goodwill recognized expected to be deductible for tax purposes				$ 0
Business combination, enterprise value				246
Business combinations, less cash				317.9
Cash and cash equivalents				$ 24.3
Wood Group | Technology
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life				15 years
Wood Group | Contracts and backlog intangible
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life				12 years
StreetLightData, Inc.
Business Acquisition [Line Items]
Business combination consideration paid in cash	$ 190.8
Goodwill recognized expected to be deductible for tax purposes	0
Cash and cash equivalents	7.3
Business combination consideration equity issued	0.9
Money stock options	5.2
Transferred liabilities incurred	$ 1
StreetLightData, Inc. | Technology
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	5 years
StreetLightData, Inc. | Customer Relationships, Contracts and Backlog
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	4 years
StreetLightData, Inc. | Contracts and backlog intangible
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	9 years
BlackLynx
Business Acquisition [Line Items]
Business combination consideration paid in cash		$ 235.4
Long term liabilities		5.3
Goodwill recognized expected to be deductible for tax purposes		0
Cash and cash equivalents		$ 5.1
BlackLynx | Technology
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		8 years
BlackLynx | Contracts and backlog intangible
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		4 years

Other Business Combinations - S

Other Business Combinations - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Feb. 04, 2022	Nov. 19, 2021	Oct. 01, 2021	Nov. 24, 2020	Mar. 06, 2020
Assets
Goodwill	$ 7,184,658			$ 7,197,000
Buffalo Group
Assets
Cash and cash equivalents					$ 8,400
Receivables					19,200
Property, equipment and improvements, net					2,300
Goodwill					130,700
Identifiable intangible assets					74,000
Prepaid expenses and other current assets					6,200
Total Assets					240,800
Liabilities
Accounts payable, accrued expenses and other current liabilities					46,900
Other long term liabilities					3,800
Total Liabilities					50,700
Net assets acquired					$ 190,100
Wood Group
Assets
Cash and cash equivalents						$ 24,300
Receivables						74,200
Other current assets						3,800
Property, equipment and improvements, net						8,300
Goodwill						207,800
Identifiable intangible assets						80,000
Miscellaneous						19,400
Total Assets						417,800
Liabilities
Accounts payable, accrued expenses and other current liabilities						71,400
Long term liabilities						28,500
Total Liabilities						99,900
Net assets acquired						$ 317,900
StreetLightData, Inc.
Assets
Cash and cash equivalents		$ 7,300
Receivables		5,200
Property, equipment and improvements, net		100
Goodwill		116,500
Identifiable intangible assets		105,100
Prepaid expenses and other current assets		2,000
Total Assets		236,200
Liabilities
Accounts payable, accrued expenses and other current liabilities		23,100
Other long term liabilities		16,200
Total Liabilities		39,300
Net assets acquired		$ 196,900
BlackLynx
Assets
Cash and cash equivalents			$ 5,100
Receivables			7,700
Property, equipment and improvements, net			800
Goodwill			195,800
Identifiable intangible assets			51,100
Prepaid expenses and other current assets			3,200
Total Assets			263,700
Liabilities
Accounts payable, accrued expenses and other current liabilities			19,500
Other long term liabilities			8,800
Total Liabilities			28,300
Net assets acquired			$ 235,400

Sale of Energy, Chemicals and_2

Sale of Energy, Chemicals and Resources ("ECR") Business - Narrative (Details) - USD ($) $ in Thousands, shares in Millions		3 Months Ended	12 Months Ended
	Apr. 26, 2019	Apr. 02, 2021	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020	Sep. 27, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Gain) loss on investment in equity securities			$ (13,862)	$ (71,325)	$ 103,623
Worley Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity instrument consideration, shares	58.2
(Gain) loss on investment in equity securities				(40,700)	(103,600)
Worley Stock | Restricted Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Dividend income				19,100	16,900
ECR Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration transferred	$ 3,400,000
Business combination consideration paid in cash	2,800,000
ECR Business | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of businesses	$ 1,100,000	$ 15,600		$ 15,600	$ 110,200	$ 935,100
Proceeds from Legal Settlements		$ 36,400

Restructuring and Other Charg_3

Restructuring and Other Charges - Summary of Restructuring and Other Charges Impacts on Reportable Segment Income by Line of Business (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 25,824
Recorded third-party environmental recoveries receivable	$ 27,000	27,000
Impairment of real estate		71,000	$ 2,400	$ 161,400
Gain (Loss) on Termination of Lease		(8,700)
Impairment of equity method investment				(162,000)
AWE ML
Restructuring Cost and Reserve [Line Items]
Gain (Loss) on Termination of Lease		(8,700)
Impairment of equity method investment			(38,500)
CH2M HILL Companies, Ltd.
Restructuring Cost and Reserve [Line Items]
Restructuring charges		161,063	99,590	324,183
Pre-tax settlement less insurance recoveries	91,300	91,300
Impairment of real estate	$ 78,300		2,400	161,400
Gain (Loss) on Termination of Lease		8,700
Impairment of equity method investment		(91,300)
CH2M HILL Companies, Ltd. | Continuing Operations
Restructuring Cost and Reserve [Line Items]
Restructuring charges		161,063	99,590	324,183
CH2M HILL Companies, Ltd. | Operating profit (mainly Selling, General and Administrative costs (“SG&A")
Restructuring Cost and Reserve [Line Items]
Restructuring charges		173,555	61,042	322,082
CH2M HILL Companies, Ltd. | Other (Income) Expense, net
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(12,492)	38,548	2,101
CH2M HILL Companies, Ltd. | Operating Segments | Critical Mission Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring charges		5,626	5,079	24,083
CH2M HILL Companies, Ltd. | Operating Segments | People & Places Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring charges		64,204	7,077	170,631
CH2M HILL Companies, Ltd. | Operating Segments | PA Consulting
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4,253	15,566	0
CH2M HILL Companies, Ltd. | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 86,980	$ 71,868	$ 129,469

Restructuring and Other Charg_4

Restructuring and Other Charges - Schedule of Restructuring and Other Activities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Restructuring Reserve [Roll Forward]
Balance at October 2, 2020		$ 14,031
Net Charges (1)		25,824
Payments & Usage		(35,718)
Balance at October 1, 2021	$ 4,137	4,137	$ 14,031
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		135,300
Payments		35,718
Recorded third-party environmental recoveries receivable	27,000	27,000
Real estate related impairments and other transformation		71,000	2,400	$ 161,400
CH2M HILL Companies, Ltd.
Restructuring Reserve [Roll Forward]
Net Charges (1)		161,063	99,590	324,183
Payments & Usage		(91,300)
Restructuring Cost and Reserve [Line Items]
Payments		$ 91,300
Real estate related impairments and other transformation	$ 78,300		$ 2,400	$ 161,400

Restructuring and Other Charg_5

Restructuring and Other Charges - Summary of Restructuring and Other Activities by Major Type of Costs (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Restructuring Cost and Reserve [Line Items]
Impairment of real estate		$ 71,000	$ 2,400	$ 161,400
Gain on termination of lease		8,700
Impairment of equity method investment				(162,000)
AWE ML
Restructuring Cost and Reserve [Line Items]
Gain on termination of lease		8,700
Impairment of equity method investment			(38,500)
CH2M HILL Companies, Ltd.
Restructuring Cost and Reserve [Line Items]
Restructuring costs		161,063	99,590	324,183
Impairment of real estate	$ 78,300		2,400	161,400
Gain on termination of lease		(8,700)
Impairment of equity method investment		(91,300)
CH2M HILL Companies, Ltd. | Lease Abandonments and Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring costs		69,802	4,282	151,150
CH2M HILL Companies, Ltd. | Voluntary and Involuntary Terminations
Restructuring Cost and Reserve [Line Items]
Restructuring costs		5,635	15,773	53,484
CH2M HILL Companies, Ltd. | Outside Services
Restructuring Cost and Reserve [Line Items]
Restructuring costs		22,340	35,210	88,476
CH2M HILL Companies, Ltd. | Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 63,286	$ 44,325	$ 31,073

Restructuring and Other Charg_6

Restructuring and Other Charges - Summary of Cumulative Amounts Incurred for Restructuring and Other Activities Costs (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	$ 1,062,577
Lease Abandonments and Impairments
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	387,601
Voluntary and Involuntary Terminations
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	150,377
Outside Services
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	316,334
Other
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	$ 208,265

Commitments and Contingencies_2

Commitments and Contingencies and Derivative Financial Instruments - Narrative (Details) $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($) case	Oct. 01, 2021 USD ($)
Loss Contingencies [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Miscellaneous	Miscellaneous
Letter of Credit | $1.6 Billion Revolving Credit Facility
Loss Contingencies [Line Items]
Line of credit facility, amount outstanding	$ 1.3
Letter of Credit | Committed And Uncommitted Letter Of Credit Facility
Loss Contingencies [Line Items]
Line of credit facility, amount outstanding	279.2
Line of Credit
Loss Contingencies [Line Items]
Letters of credit outstanding	280.5
Surety Bond
Loss Contingencies [Line Items]
Letters of credit outstanding	2,200
Interest Rate Swap
Loss Contingencies [Line Items]
Derivative, notional amount	$ 748.4
Interest Rate Swap | Sterling Overnight Interbank Average Rate
Loss Contingencies [Line Items]
Derivative, fixed interest rate	0.82%
Interest Rate Swap | Minimum
Loss Contingencies [Line Items]
Derivative, fixed interest rate	0.704%
Interest Rate Swap | Maximum
Loss Contingencies [Line Items]
Derivative, fixed interest rate	1.116%
Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Derivative, notional amount	$ 127.8
Cross Currency Interest Rate Contract | LIBOR
Loss Contingencies [Line Items]
Derivative, basis spread on variable rate	87.50%
Cross Currency Interest Rate Contract | Minimum
Loss Contingencies [Line Items]
Derivative, fixed interest rate	0.726%
Term of contract	3 years 6 months
Cross Currency Interest Rate Contract | Maximum
Loss Contingencies [Line Items]
Derivative, fixed interest rate	0.746%
Term of contract	10 years
Cross Currency Interest Rate Contract and Interest Rate Swamp
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value	$ 128.2	$ (0.8)
Cross Currency Interest Rate Contract and Interest Rate Swamp | Deferred Long-term Liability Charges
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value		(11)
Cross Currency Interest Rate Contract and Interest Rate Swamp | Total Other Non-current Assets
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value		10.2
Interest Rate Swap and Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Unrealized gain (loss) on derivatives	87.5	(7.4)
Foreign Exchange Forward
Loss Contingencies [Line Items]
Derivative, notional amount	298.2	506.5
Derivative assets (liabilities), at fair value	(3.2)	$ 55.5
Derivative settled	66.7
Foreign Exchange Forward | Total Other Non-current Assets
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value	2.8
Foreign Exchange Forward | Other Current Assets
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value	0.3
Foreign Exchange Forward | Accrued Liabilities
Loss Contingencies [Line Items]
Derivative assets (liabilities), at fair value	$ (6.3)
Foreign Exchange Forward | Minimum
Loss Contingencies [Line Items]
Term of contract	1 month
Foreign Exchange Forward | Maximum
Loss Contingencies [Line Items]
Term of contract	16 months
Treasury Lock
Loss Contingencies [Line Items]
Number of instruments held | case	2
Derivative, notional amount	$ 500
Derivative assets (liabilities), at fair value	40.9
Unrealized gain (loss) on derivatives	30.8
Aggregate principal amount	$ 250
Treasury Lock | First 250 Million
Loss Contingencies [Line Items]
Derivative, fixed interest rate	2.769%
Treasury Lock | Remaining 250 Million
Loss Contingencies [Line Items]
Derivative, fixed interest rate	2.672%

Contractual Guarantees, Litig_2

Contractual Guarantees, Litigation, Investigations, and Insurance (Details) $ in Millions, $ in Millions			12 Months Ended
	Apr. 12, 2022 AUD ($)	Apr. 12, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 28, 2012 MW	Dec. 22, 2008 case
Loss Contingencies [Line Items]
Recorded third-party environmental recoveries receivable			$ 27
UGL Infrastructure Pty Limited | Consortium Agreement
Loss Contingencies [Line Items]
Ownership percentage				50%
General Electric And G E Electrical International Incorporation
Loss Contingencies [Line Items]
Plant capacity (in MW) | MW				360
Litigation settlement amount awarded to other party	$ 640
Gain (loss) related to settlement			$ 91.3
Kingston Power Plant of the TVA, Secondary Case No. 3:13CV-505-TAV-HBG
Loss Contingencies [Line Items]
Number of cases | case					10
JKC Australia L N G Pty Limited
Loss Contingencies [Line Items]
Litigation settlement amount awarded to other party		$ 475

Segment Information - Narrative

Segment Information - Narrative (Details)	12 Months Ended
	Sep. 30, 2022 operatingSegment lineOfBusiness	Sep. 30, 2022 segment lineOfBusiness
Segment Reporting [Abstract]
Number of operating and reporting segments	3	3
Number of global lines of business	2	2

Segment Information - Schedule

Segment Information - Schedule of Total Services Revenues for Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Segment Reporting Information [Line Items]
Revenues	$ 14,922,825	$ 14,092,632	$ 13,566,975
Critical Mission Solutions
Segment Reporting Information [Line Items]
Revenues	5,233,629	5,087,052	4,965,952
People & Places Solutions
Segment Reporting Information [Line Items]
Revenues	8,569,900	8,378,179	8,601,023
PA Consulting
Segment Reporting Information [Line Items]
Revenues	$ 1,119,296	$ 627,401	$ 0

Segment Information - Schedul_2

Segment Information - Schedule of Total Revenues, Segment Operating Profit and Total Asset for Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020
Segment Reporting Information [Line Items]
Total Segment Operating Profit		$ 917,850	$ 688,089	$ 535,973
Restructuring, Transaction and Other Charges		(197,884)	(350,394)	(327,413)
Total Other (Expense) Income, net		(41,503)	7,513	(94,770)
Earnings from Continuing Operations Before Taxes		876,347	695,602	441,203
Gain (loss) on litigation settlement		19,500
Loss related to litigation settlement		(19,500)
Intangibles amortization		198,600	149,800	90,600
Recorded third-party environmental recoveries receivable	$ 27,000	27,000
Impairment of real estate		71,000	2,400	161,400
Cost incurred in investment			297,800
Gain related to cost-method Investments		13,900
Gain on termination of lease		8,700
Impairment of equity method investment				(162,000)
JKC Australia L N G Pty Limited | Settled Litigation
Segment Reporting Information [Line Items]
Gain (loss) on litigation settlement		(91,300)
Loss related to litigation settlement		91,300
AWE ML
Segment Reporting Information [Line Items]
Gain on termination of lease		8,700
Impairment of equity method investment			(38,500)
C3.ai. Inc.
Segment Reporting Information [Line Items]
Fair value adjustments			(49,600)
ECR Business
Segment Reporting Information [Line Items]
Fair value adjustments			34,700	(74,300)
CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Impairment of real estate	$ 78,300		2,400	161,400
Gain on termination of lease		(8,700)
Impairment of equity method investment		(91,300)
Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Profit		1,480,174	1,378,612	1,112,777
Corporate Non Segment
Segment Reporting Information [Line Items]
Other Corporate Expenses		(364,440)	(340,129)	(249,391)
Critical Mission Solutions | Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Profit		424,385	447,161	372,070
People & Places Solutions | Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Profit		823,564	780,380	740,707
PA Consulting | Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Profit		$ 232,225	$ 151,071	$ 0